Wednesday, 13 November 2013
Dissociative Identity Disorder (Multiple Personality Disorder)(4)
Dissociative Identity Disorder (Multiple Personality Disorder)(3)
Dissociative Identity Disorder (Multiple Personality Disorder)(2)
Dissociative Identity Disorder (Multiple Personality Disorder)
Asteroids: Formation, Discovery and Exploration
What Is Herpes? What Is Genital Herpes?
Tuesday, 12 November 2013
Schizophrenia: Schizophrenia Information & Treatment Introduction

Monday, 11 November 2013
The ‘Tooth’ About Pelagornithids



What Happens to Google Maps When Tectonic Plates Move?



Thursday, 7 November 2013
5 Questions To NEVER Ask Yourself
Life causes us to question ourselves, but not all thoughts that come to mind are beneficial for us.
In fact, many can be harmful and misleading.
Here are five of those undesirable questions that if you find yourself asking, you'd be wise to rephrase or reroute them.
Subtle differences in phrasing can make a big impact in your mind.
1. Why Am I Here?
Whether you got to this moment by a failed marriage, back surgery, a lottery ticket, or by bus, it doesn't matter for purposes moving forward. If you don't like your situation, the only way out is found in solutions for the present moment, and "why am I here?" moves your mindset backwards, away from solutions.
There's a better question that puts your focus in the present moment.
Better Question: Where do I go from here?
Quote: "You cannot change your destination overnight, but you can change your direction overnight." - Jim Rohn
2. Why Me?
This question sums up the victim's mindset. The main reason you don't want to be a victim is because victims only have things happen TO them. They can't take charge and control the situation, because their focus is not on what they can do, but on what happens to them. Would the opposite of this question give the opposite mindset of a victim? Yes, ask yourself the opposite...
Better Question: Why not me? (This is the possibility question!)
Quote: “To the dumb question, 'Why me?' the cosmos barely bothers to return the reply, 'Why not?'” - Christopher Hitchens
3. How Do I Lose Weight?
It doesn't look bad, but it is secretly horrible. Asking this question frames the problem (being overweight) for a temporary solution. Unless you're trying to make weight for your wrestling match, I doubt you want to lose weight and put it back on a month later. To explain why, here is the better question to tackle weight loss.
Better Question: Who do I need to be to weigh less?
This alternative question has an identity shift built into it as part of the solution, and these are the solutions that stick. Weight, after baseline genetic attributes, is a result of lifestyle, which stems from your identity. If you try to change with forced mechanical actions - like the answers to the question "how do I lose weight?" will lead you to do (exercise, eat vegetables, control portion size, etc) - your willpower will run out eventually.
"Who do I need to be?" changes the goal to an internal shift of values and habits that will automagically take you to a lower weight. It's sustainable because you'll have changed at the core level instead of forcing yourself to live against your established nature. To start the process of changing your identity, compare the benefits of a new identity to your current one. How would it be better? How would it be worse? Which do you like better overall?
"How do I lose weight?" makes you want the results, and "who do I need to be..." makes you want the change. When you want the change, you'll get the results. When you only want the results, you'll often end up with nothing.
Quote: "You must begin to think of yourself as becoming the person you want to be." - David Viscott
4. Why Won't Anyone Talk To Me?
Why won't you talk to anyone else? If you want to talk to someone, it isn't their responsibility to talk to you, but yours to talk to them. Every single conversation you have is either initiated by you or by someone else. If you never initiate conversation, it gives people the impression that you don't want conversation.
A better, more productive question to ask yourself when you're lonely is...
Better Question: Why don't I go introduce myself to that person?
Quote: "There are no strangers here; Only friends you haven't yet met." - William Butler Yeats
Bonus Quote: “Fear makes strangers of people who would be friends.” - Shirley MacLaine
5. When Will I Finally Succeed?
To ask this question shows that you're after the end result without caring about how you arrive at it. The "overnight success stories" you hear about are preceded by years of progress that you don’t hear about. Focus on becoming the type of person who would succeed. Focus on progress and you should find success eventually. But instead of thinking about success, here’s a better question...
Better Question: What small steps could I take today to move forward?
Quote: "If you focus on results, you will never change. If you focus on change, you will get results." - Jack Dixon
If you want to know why getting motivated doesn't work, read my Ultimate Guide For Taking Action When You Don’t Feel Like It. And if you want to learn how habits, focusing, and small steps all relate and can change your life, you would enjoy subscribing to Deep Existence. I write an insightful newsletter each Tuesday and give new subscribers a set of 40 focus wallpapers and my well-liked eBook, Stress Management Redefined. If you’re interested, sign up here. We’d love to have you!
How To Think Like A 21st Century Entrepreneur. Tips For Success And Getting Ahead In The Information Age.
Do you ever stop to wonder how rich people made their money?
Are they smarter than you?
Did they just work harder or smarter?
Or did they have a lucky break or some sort of advantage that let them reach their goals easily.
Worrying about all these questions is not a good thing to do if you want to create your own business.
Instead of worrying about what you can't change, it's much better to start thinking like a 21st century entrepreneur. They're much like entrepreneurs and businessmen from other time periods, but being in the early stages of the Information Age, quite a few differences also exist.
Tips to Succeed in Business (and Life)
Here's a collection of sage advice that will help you think like a modern entrepreneur. Following these tips and recommendations can give you an edge when competing against others in the business world.
● Seize the Day - As Saul Bellow wrote, it's important to seize the day. This includes being able to see opportunities and also have the foresight to act on them when they're noticed. This is not easy in the modern world that moves so quickly, but it's a good way to increase your chance of success in business and life in general.
● The Three Keys - If you want to succeed professionally in the 21st century, it all comes down to three basic things that you need; talent, persistence, and luck. While the first two are up to you, the last - getting a lucky break - may never happen. That is, unless you can do something to increase the odds you'll get lucky. This is the spirit of the modern entrepreneur.
● All About Balance - Learning moderation in all aspects of your life can go a long way in helping you have the right mindset to get ahead in the business world. This isn't always easy to do - especially with all the stress that comes with being a business leader - but with practice you can learn to balance work, play, rest and other aspects of your life.
● Ideas are Good, Results are Better - Thinking up ideas is not all that difficult for most people given enough time. On the other hand, actually taking those ideas and doing something with them is another matter entirely. The 21st century entrepreneur not only comes up with killer ideas, they act on them and take the lead no matter what industry they're in.
● Learn to Multitask - Being able to handle doing more than one thing at the same time is almost a necessity in the modern business world. The sooner you can learn to efficiently multitask, the sooner you'll begin to reach your goals and even surpass them. That or learn how to outsource easy tasks.
● Be the Change You Want to See - No one likes a whiner. Not even most mothers. Instead of complaining about something being wrong or corrupt and doing nothing, log-off of Facebook and Twitter and get to work changing the world for the better. This is what separates the leaders from the followers, the good from the great.
● Always be Learning - Technology moves so fast these days that it can be tough to stay up to date. This is essential for the 21st century entrepreneur who wants to achieve their goals, however. Taking time each week to stay well read in your industry can help your career considerably in a lot of different ways. If you can learn something new every day or every week, you're going to excel.
Life of the 21st Century Entrepreneur
The life of a 21st century entrepreneur may look boring and tedious to some, but this couldn't be further from the truth. Running your own business and becoming a leader is very exciting on many different levels. From the money that's made to the feelings of accomplishment as milestones are reached, the life of a modern entrepreneur is one that's very fulfilling.
Having said that, not everyone is cut out for the life of an entrepreneur. But if you work hard and take the advice above to heart, there's a good chance you can succeed. The Internet has been tremendously helpful with leveling the playing field for people just starting out. Some would say there's never been a better time to start a business, especially one that involves the Internet and mobile devices.
Deliver Your Speech Like A Pro By Using These 12 Ways to Overcome Your Fear of Public Speaking
Why is it that so many people are scared witless of speaking in public?
Surveys show that some of us are more afraid of public speaking than we are of death!
Too many of us have the idea that public speaking is a talent that you’re born with—or aren’t.
In truth, great speakers are made, not born and anyone can learn to deliver a speech like a pro.
Whether it’s speaking at a town hall meeting or making a presentation at work, most of us will have the need to step up to the podium at some time. Why not learn how to deliver an effective speech right now? Here are some hints for overcoming your fears and mastering the art of speaking in public.
Admit you’re scared.
The main underlying reason for the phobia about public speaking is fear of the unknown. You don’t know what’s going to happen when you get up there on the podium and open your mouth. Will you forget your speech? Will you lose your voice? Will people laugh at you? When you look at these fears rationally, they don’t make much sense. None of these are very likely, are they? Identifying your fear will help you to conquer it.
Face your fears.
When your fears are amorphous, free-floating things like ghosts, it’s easy to be afraid of them. Look carefully at each of your fears and face them, one at a time. Pretty soon, you’ll be so comfortable with those former fears that you’ll see how unimportant they really are. Vow to take on those fears and triumph over them. Sometimes you have to be willing to take the plunge and just do it!
Stop sabotaging yourself.
If you keep telling yourself that you can’t speak in public and will never be an effective speaker, then you won’t be one. Not because there’s any physical or organic reason you can’t do it, but because you’ve convinced yourself that you can’t. How do you even know if you’re terrible at something you’ve never tried? Instead, tell yourself that with a bit of work, you can be a good public speaker. Repeat his mantra over and over. Then get to work!
Take a public speaking course.
Anything is scary when you have no idea what you’re doing! Nothing can raise your confidence and allay your fears like taking a course in public speaking. Some companies make these a requirement for rising execs, but just about any of us can benefit from mastering the ins and outs of speaking before a crowd. You never know when you’ll want to protest your city’s trash collecting policies or help a friend run for local office.
We are making progress but now it’s time to make a plan and overcome your fear so you can deliver a compelling speech to your audience. Keep reading for some easy ways to put your fears to rest.
Have a plan.
You can start out by writing your speech on a piece of notebook paper and scribble changes in the margins, but before you actually deliver it, make a formal presentation. Start entering your text into a document with title, bullet points and subheds. Organize your information. Move topics around until you find the best order. The more coherent and organized your speech is, the easier it will be to deliver.
Be prepared.
Are you afraid of forgetting your lines? Rehearse until you have them down pat, and put your speech on cards or a tablet so that you can consult your notes if you need to. Worried about not having your props? Pack them in your bag ahead of time. If you’re lying in bed worrying about what could go wrong, isolate each possibility and ask yourself what you can do to prevent the problem. If you have to get out of bed and do something to help you be more prepared, then do it—provided you go back to bed and get a good night’s sleep!
Act confident, even if you don’t feel that way.
Remind yourself that the audience doesn’t know how scared you are.
While you may be thinking that everyone can see that your stomach is in knots and you feel like throwing up, they can’t see what’s going on inside your head (or your stomach). Fake it til you make it! Stand up straight, pull your shoulders back and put on a great big smile. Looking and acting confident can inspire trust in your audience—and distract them from the fact that your knees are knocking together.
Practice, practice, practice.
Set up your laptop or smartphone to make a video of your speech rehearsals. Look at the results with an open mind and see how you can improve your presentation. Don’t be too hard on yourself, but do note the things you can improve upon. Practice makes perfect, and this is the surest way to look at yourself from the outside and perfect your speech before giving it. If you have trouble pronouncing some words, maybe you should change them, or practice saying them until you get them right. The more often you deliver your speech, the better you will get at making your words flow effortlessly. For your very first speech, you may need to do this 20 or 30 times before you have it down, but the time spent will pay off in the long run. Every successive speech will be easier and require less prep time.
Record your performances.
Use that same phone or laptop to record every speech you deliver. Compare how the actual performance compares to your rehearsals. Strive to make every speech better than the last.
Breathe deeply and relax.
Practice a few breathing exercises to help you relax before going onstage. The calmer and more relaxed you feel, the more you can concentrate on delivering your speech.
Don’t get rattled.
If you do forget a point or make a mistake, just take a deep breath and keep moving ahead. No one expects you to be perfect, so why expect it of yourself? We know from watching last year’s presidential debates that practically every candidate made a gaffe or two at some time. If the people who want to run this country can’t get everything right all the time, it’s not very realistic to expect perfection from the rest of us! Don’t take it too seriously.
Reward yourself for a job well done.
After you’ve successfully delivered your speech, give yourself a pat on the back. Congratulate yourself for overcoming your fears. You’ve achieved a milestone, and any speech you give in the future will be much easier!
11 Simple Ways to Fall in Love With Yourself
Whenever we think of falling in love we always imagine another person involved. It even feels awkward to utter the phrase “I’m starting to fall in love with myself”. Try it on for size and I bet it’ll feel like shirt that’s too small, something about it just doesn’t feel right.
We’ve all reached the point of needing to love ourselves more. Maybe the thought arose after you’ve been taking care of another person for too long, or maybe you’re just burnt out and need to pour some energy back into yourself.
You’re feeling drained, wiped, out of touch and something just feels a little off. Sometimes a little love is all you need. A dash of that feeling has the potential to take on a life of its own.
You’ve felt love, usually for another. This time we’re going to flip the script and direct this awesome force back to the one who deserves it the most, you.
You Already Know How to Love Yourself, You’ve Just Forgotten
If you don’t love the place you’re at or the person you’ve become, it’s not your fault. The act of loving is a simple process you can reignite and start again. The beauty is once you ignite the spark of love in your life, it can start a fire that can be hard to turn off.
Even a torrential downpour will have a hard time turning off your love. Once you learn the art of filling yourself up, you’ll no longer have to seek out others to turn on that feeling in you. You won’t feel like you have to chase love, or there’s ever a lack of it in your life.
To use a beautiful illustration. Pretend you’re a bucket and you’re trying to fill someone else up. You try and try but at the end of the day you’re still empty. You want to learn how to create your own faucet. That way you can fill yourself up whenever you're in need and even give a little extra to a loved one, friend, or stranger.
It’s time to unveil the art of loving.
1. Take a breath.
Taking a deep breath is one of the simplest luxuries we can give ourselves. When we breathe deeply we activate the relaxation response within our bodies, which turns on our recovery mechanisms. When the body is relaxing it puts our mind at ease. Face it, no one like to be a bundled up ball of stress.
Stress produces cortisol, which is incredibly bad for your body, and acts as a cancer causing agent. Definitely not the product of someone loving themselves.
So, take a deep breath and let it out slow. Focus on the moment and give your body and mind a treat.
2. Give yourself a hug.
When giving a hug, your body releases the feel-good chemical oxytocin. Oxytocin is also known as the love chemical.
Imagine you’re about to hug someone you have the deepest love for. Maybe it’s a long lost love, or a family member you haven’t seen in a while. Imagine the powerful force of this hug and how you would feel the moment before impact.
Channel this feeling into yourself. Wrap your arms around yourself as you would them. Imagine them giving you love back. Really take some time to feel it deeply. The more real you make it the more its power will stick with you.
Eventually, the love you’re pretending to exchange with another should be the same level of love you feel for yourself.
3. Give yourself a compliment.
What’s something you truly love about yourself? It could be your drive or ambition, or your friendliness and openness. It could even be your luscious curly hair. The only catch is you have to mean it. Really feel the love shower upon you as you give yourself this compliment.
It might feel strange to verbally give yourself a compliment, but it’s important. You must push through the discomfort and really take the compliment. What emotions does it trigger? Does it make you laugh, smile or feel funny?
Let the feeling rush over you. Take the compliment, there’s many more to come.
4. Turn off your phone, unplug.
The immense amount of time we spend with our devices can actually leave us feeling worse about ourselves. The constant stream of false positiveness streaming down your Facebook wall can leave you feeling drained and awful. The world can fill us up with life, if we let it.
When we’re wrapped up in virtual worlds, we allow the subtle beauty that’s unfolding around us to pass us by. The smile of a stranger, the wag of a dogs tail, a leaf slowly twirling to the ground. We miss everything.
When we’re actually aware of the world around us we can gain new insights about ourselves and the nature of how things unfold. Take some time and be a part of it. Take a breath and try being present.
Sending that text can wait.
5. Go for a walk.
A healthy body is one that’s treated with love and respect. Walking gives us time to process the world around us. The act of walking gives you time to breathe and contemplate your future. Some of the greatest minds of our world were avid workers, Albert Einstein and Henry David Thoreau, just to name a few. How would you like to join the class of these fine men?
Walking can even be taken up as a form of meditation. Focusing on each step fully draws you into the moment. Try and cultivate your gratitude for the ability to take a slow stroll. Your worries melt away and you begin to uncover the self love you’ve always had.
6. Smile.
In changing your body physiology you actually bring more happiness into your life. When you smile imagine the force of your smile bringing a warmth throughout your entire body. Let your smile fill with gratitude and joy for every aspect of yourself.
Imagine you were smiling at the love of your life, take this passion and throw it into your upward grin.
Now unleash the force of your smile onto yourself.
7. Write down a big dream of yours and take a step towards it, now.
Take out a sheet of paper and title it “My Biggest Dreams”, and dream away.
Let the pen run and see where it takes you. Hold an attitude of openness, and don’t judge anything that comes out.
Once you’ve spilled your guts onto the page, relax for a moment and let it simmer. See what jumps out at you the most. Something you’ve written will ring true and make you emotional. This is where you want to stake your claim.
Once you’ve found the hidden gem, take one step towards making it real. The momentum will bring you to life.
8. Treat Yourself
Often we spoil others with our gifts, even if it just happens to be our attention. This time do something to spoil yourself. It could be a going out to a meal you love, or visiting a place you love to go.
Think of it like taking yourself on a date. We all know you deserve it.
9. Write down five things you love about yourself.
This is an extension of giving yourself a compliment. If you’ve passed #3 with flying colors then you’re ready for this step. Your goal here is to find more things you love about yourself and write them down.
Don’t do this half assed. You must truly mean each thing you write down about yourself.
10. Look in the mirror and say, “I love myself”.
This is taking loving yourself to the next level. Open your eyes and gaze deeply into one of your eyes (it’s impossible to do both at once), and feel the love coming from within.
Imagine you were uttering this phrase to someone you love deeply.
Say it out loud as many times as possible. Engage with it fully. The more intensely you feel it, the more love it will bring back to you.
11. Send a note of gratitude to someone you love.
When you share your love it always finds a way to come back to you. Sometimes giving away your love makes it come back tenfold. Think of someone you care deeply about and tell them.
Tell them what you love about them, the little things they do that you appreciate and make your day.
Now you have a plethora of ways to open up your heart to yourself. Begin now, and start small. Soon you’ll be overflowing with abundance and love.
Now that you are on the path to falling in love with yourself make sure you take some time to find out how to accept your destiny and build the ultimate form of confidence.
Monday, 28 October 2013
Hi guys, I just wanted to share this inspirational post I stumbled upon with you MOTIVATIONAL TALK
Ou Dieu vous a seme, il faut savoir fleurir
YOU MUST KNOW HOW TO FLOWER WHERE GOD HAS SOWN YOU
IF YOU DON'T GET WHAT YOU LIKE
THEN YOU MUST
LEARN TO LIKE WHAT YOU GET
MOTIVATIONAL PEP TALK
By
VIKRAM KARVE
YOU MUST KNOW HOW TO FLOWER WHERE GOD HAS SOWN YOU
Long back I learnt a trick from an eminent trainer on how to get the audience to focus. I too use this technique on a few occasions when I want my audience to settle down to receptive vibes.
The moment you take the stage, you tell the audience to close their eyes for one minute and think of the one person who they consider as their most important mentor.
A few days ago, one of my brilliant ex-students, who attended a motivational lecture in her new organization and was subjected to the same exercise, rang me up and told me that it was my face that came to her mind as a mentor.
Then she talked about her work, that she was not very happy with her new workplace which apparently did not measure up to her high expectations. I feel privileged that my ex-student considers me a mentor and I write this “pep talk” especially for her and all my dear mentees, protégées and protégés .
Ou Dieu vous a seme, il faut savoir fleurir
YOU MUST KNOW HOW TO FLOWER WHERE GOD HAS SOWN YOU
Every person, sooner or later, goes through a moment when it seems that he or she is on the wrong road, that his entire way of life is wrong.
Have you ever experienced this feeling...?
Think about it.
Do you find yourself stuck in an incongruous career or in an incompatible relationship or in a redundant place...?
And sadly there is nothing you can do about it, owing to compulsions and constraints beyond your control.
You cannot turn around and retrace your steps or change your road of life.
It seems you have crossed the point of no return and you have no choice but to keep on travelling on the “wrong” road of life.
Failure follows failure ... and with repeated failure comes the fear of failure.
It is indeed a terrible vicious cycle which gradually overwhelms you with the chill of despondency.
What can you do in such a situation...?
Maybe the answer lies in a saying I read somewhere a few years ago and noted in my diary:
“ Ou Dieu vous a seme, il faut savoir fleurir ”
which roughly translated means
“You must know how to flower where God has sown you”
or
“wherever God plants you, there you must learn how to bloom”
How does one learn to flower where God has sown you, bloom wherever God plants you...?
One may turn to the Enchiridion of Epictetus for guidance.
Epictetus (A.D.55 – A.D. 135), the great Stoic Philosopher, states that happiness and freedom begin with a clear understanding of one principle:
Some things are within our control, and some things are not in our control.
This is the basic Stoic truth of subjective consciousness and it is only after you have faced up to this fundamental rule and learned to distinguish between what is in your power from what is not in your power, and know what you can control and what you cannot control, that inner tranquility and outer effectiveness become possible.
On analytical reflection we find that the mind alone can be brought under our control. Everything else, the world of events and people’s behaviour, is beyond the scope of our control.
What disturbs you are not events but your attitude towards them
Don’t demand or except that events happened as you would wish them to. Accept events as they actually happen. And you will be at peace with yourself.
Except for extreme physical abuse, other people cannot hurt you unless you allow them to.
Don’t consent to be hurt and you won’t be hurt
You must learn to approach life as a banquet and not as a buffet.
Think of your life as if it were a banquet where you would behave graciously:
When a dish is passed to you, extend your hand and help yourself to a moderate portion
If a dish should pass you by, enjoy what is already on your plate
Or if a dish has not been passed to you yet, then patiently wait for your turn
Carry on the same attitude of polite restrain and gratitude to your children, spouse, colleagues, friends, career and money.
There is no need to yearn, envy and grab.
You will get your rightful share when it is your time.
It then becomes our paramount duty to control the mind and practice total unconcern to externals.
When something happens, the only thing in your power is your attitude toward it ... you can either accept it or resent it.
To accept an event is to rise above it, to resent an event is to be overpowered by it.
With acceptance comes happiness, with resentment comes misery.
Acceptance of an event is not to be mistaken for a life of passivity or submission to fatalism characterized by laziness and a sense of helplessness. “Simply doing nothing does not avoid risk, but heightens it.”
Epictetus exhorts us, therefore, to brave the storms of life with planned action born of clear thinking. He recognizes, too, the practical necessity of working for worldly gains, but cautions us only against the false belief that happiness depends on the results such endeavours.
Being an integral part of social structure, you cannot live in isolation; social interaction is inescapable.
In your relationship with others at home, at work or in society, no matter how people behave, you have to maintain inner tranquility, with unwavering attention on achieving your own merit and excellence.
People act under their own inner compulsions over which you can exercise no control. Epictetus advises: “Focus not on what he or she does, but on keeping to your higher purpose”
He assures that if you truly live in tune with your will and resolve, and in harmony with your inner self, nobody’s words or actions (barring extreme cases) can disturb your mental equipoise.
Duty of any kind is not to be slighted.
A person should not be judged by the nature of his duties, but by the manner in which he performs his duties.
In his discourse on Karma Yoga Swami Vivekananda says:
“A shoemaker who can turn out a strong, nice pair of shoes in the shortest possible time is a better man, according to his profession and his work, than a professor who talks nonsense every day of his life”.
Remember, FATIGUE LIES IN HALFHEARTEDNESS
If we do with sincerety, with full zest and enthusiasm, the duty which is in our hands now, we make ourselves happy.
The key is to work with freedom and love and without too much expectation.
Try to accomplish something wherever you are and do not compare with others.
Undue hankering after rewards will render you akin to a slave of your expectations; you must work for your own internal satisfaction – work like a master and not as a slave.
This glorious attitude to life and knowledge of your self makes you free in a world of dependencies and enables you to flower where God has sown you, and to bloom wherever God plants you.
" Ou Dieu vous a seme, il faut savoir fleurir "
Wherever God plants you, there you must learn how to bloom.
You must know how to flower where God has sown you.
Wish you GODSPEED in all your endeavors.
Wednesday, 1 May 2013
The Universe Is 13.82 Billion Years Old
So what’s going on?
The European Space Agency’s Planck
mission is what’s going on. Planck has been scanning the entire sky,
over and over, peering at the radio and microwaves pouring out of the
Universe. Some of this light comes from stars, some from cold clumps of
dust, some from exploding stars and galaxies. But a portion of it comes
from farther away…much farther away. Billions of light years, in fact, all the way from the edge of the observable Universe.
This light was first emitted when the Universe was very young, about 380,000 years old.
It was blindingly bright, but in its eons-long travel to us has dimmed
and reddened. Fighting the expansion of the Universe itself, the light
has had its wavelength stretched out until it gets to us in the form of
microwaves. Planck gathered that light for over 15 months, using
instruments far more sensitive than ever before.
Drawing of the Planck spacecraft.
Image credit: ESA/NASA/JPL-Caltech
Image credit: ESA/NASA/JPL-Caltech
The light from the early Universe shows it’s not smooth.
If you crank the contrast way up you see slightly brighter and slightly
dimmer spots. These correspond to changes in temperature of the
Universe on a scale of 1 part in 100,000. That’s incredibly small, but
has profound implications. We think those fluctuations were imprinted on
the Universe when it was only a trillionth of a trillionth of a second
old, and they grew with the Universe as it expanded. They were also the
seeds of the galaxies and the clusters and galaxies we see today.
What started out as quantum fluctuations when the Universe was
smaller than a proton have now grown to be the largest structures in the
cosmos, hundreds of millions of light years across. Let that settle in
your brain a moment.
And those fluctuations are the key to Planck’s observations. By
looking at those small changes in light we can find out a lot about the
Universe. Scientists spent years looking at the Planck data, analyzing
it. And what they found is pretty amazing:
- The Universe is 13.82 billion years old.
- The Universe is expanding a bit slower than we expected.
- The Universe is 4.9 percent normal matter, 26.8 percent dark matter, and 68.3 percent dark energy.
- The Universe is lopsided. Just a bit, just a hint, but that has profound implications.
What does all this mean? Let’s take a quick look, one at a time, at these results.
The Universe is 13.82 billion years old.
The age of the Universe is a little bit higher than we expected. A
few years ago, the WMAP spacecraft looked at the Universe much as Planck
has, and for the time got the best determination of the cosmic age: 13.73 +/- 0.12 billion years old.
Planck has found that the Universe is nearly 100 million years older than that: 13.82 billion years.
At first glance you might think this is a really different number.
But look again. The uncertainty in the WMAP age is 120 million years.
That means the best estimate is 13.73 billion years, but it could easily
be 13.85 or 13.61. Anything in that range is essentially
indistinguishable in the WMAP data, and 13.73 is just in the middle of
that range.
And that range includes 13.82 billion years. It’s at the high end,
but that’s not a big deal. It’s completely consistent with the older
estimate, but Planck’s measurements are considered to be more accurate.
It will become the new benchmark for astronomers.
The Universe is expanding a bit slower than we expected.
The Universe is expanding,
and has been ever since the moment it was born. We can measure the
speed of this expansion in various ways; for example, looking at distant
exploding stars. We can measure how fast they are moving away from us,
swept along with the expansion of space, by seeing how much their light
is redshifted (I have details about how this works in an earlier post on
redshifts and the expansion of the Universe).
We can measure their distance, too, using various methods including how
bright they appear to be, and with both their speed and distance we can
calculate how fast the Universe is expanding.
The farther away you go, the faster the Universe expands, and what
Planck found is that the Universe is getting bigger at a rate of 67.3 kilometers per second per megaparsec.
A megaparsec is a unit of distance equal to 3.26 million light years
(which is convenient to astronomers). That means that if you look at a
galaxy one megaparsec away, it appears to be moving away from you at
67.3 km/sec. A galaxy two megaparsecs away would recede at twice that
speed, 134.6 km/sec, and so on.
This is called the Hubble constant. Various methods have been used to measure it for the past century, and some of the best
found it to be about 74.2 km/s/Mpc. Planck’s measurement is smaller, so
the Universe appears to be expanding a little more slowly than we
thought, which is why the age is a bit higher than measured before, too.
Part of the reason the number is smaller from Planck is that it’s
looking at light that is very old, and came from very far away, so they
extrapolate forward in time to see how fast the Universe is growing.
Other measurements use light from objects that are closer, and
scientists extrapolated backwards.
Since the two numbers are different, this may mean the Hubble
constant has changed over time, though that’s way too preliminary to
tell. I’ll just note it here as an interesting development. The Hubble
constant is notoriously difficult to measure, and I imagine astronomers
will be arguing about it for some time yet to come.
The Universe is 4.9 percent normal matter, 26.8 percent dark matter, and 68.3 percent dark energy.
I love this bit. The amount of the fluctuations in the light from the early Universe as well as how they are distributed can be used to figure out what the Universe is made of. The ingredients and amounts of the universal constituents are:
- 4.9 percent normal matter
- 26.8 percent dark matter
- 68.3 percent dark energy
Planck's map of the location of all the matter in the Universe.
The strip across the middle is due to bright light from our galaxy
which interfered with the much fainter background, and had to be
subtracted away. Click to ensaganate.
Image credit: ESA/NASA/JPL-Caltech
Image credit: ESA/NASA/JPL-Caltech
Normal matter is what we call protons, neutrons, electrons; basically
everything you see when you look around. Stars, cashews, dryer lint,
and books are all made of normal matter. So are you.
Dark matter
is a substance we know exists, but it’s invisible. We see its effects
through its gravity, which profoundly alters how galaxies rotate and
clusters of galaxies behave. There’s more than five times as much of it
as there is normal matter.
Dark energy
was only discovered in 1998. It’s very mysterious, but acts like a
pressure, increasing the expansion rate of the Universe. We know very
little about it other than the fact that it exists, and it’s a bigger
component of the universal budget than normal and dark matter combined.
The best estimates for these numbers before Planck were a bit
different: 4.6, 24, and 71.4 percent, respectively. That’s neat: there’s
less dark energy than we thought, so the Universe is made up a little
bit less of that weird stuff, if that makes you feel better. But there’s
still a lot of it!
The good news is that having better numbers for all these means
astronomers can tune their models a little bit better, and we can
understand things a little better. Different models of how the Universe
behaves predict different ratios for these ingredients, so getting them
focused a bit better means we can see which models work better. We’re
learning!
The Universe is lopsided. Just a bit, just a hint, but that has profound implications.
Of all the results announced so far, this may be the most
provocative. We expect the Universe to be pretty smooth on large scales.
Those early fluctuations should be random, so when you look around at
this ancient light, the pattern should be pretty random.
And it is! The distribution of the fluctuations is quite random. It
may look to your eye to have patterns, but our brains are miserable at
seeing true randomness; we impose order on it. You have to use
computers, math, and statistics to measure the distribution to test for
true randomness, and the Universe passes the test.
Kindof. The distribution is random, but the amplitudes
of the fluctuations are not. Amplitude is how bright they are; like the
height of a wave. It’s hard to see by eye, but in the big map made by
Planck, the fluctuations are a wee bit brighter than they should be on
one side, and a wee bit dimmer on the other. It’s an incredibly small
effect, but appears to be real. It was seen in WMAP data and confirmed
by Planck.
A simple model of the Universe says that shouldn’t happen. The Universe is lopsided on a vast scale! What can this mean?
A map of the lopsided Universe. This shows the difference between a
smooth mathematical fit to the background light of the cosmos versus
what is actually seen - these leftover fluctuations are just a hair
bigger than we expected, but that makes all the difference in the
Universe. Click to anomalate.
Image credit: ESA and the Planck Collaboration
Image credit: ESA and the Planck Collaboration
Right now, we don’t know, and there are far more ideas for why this
would happen than we have data to test for. It could mean dark energy is
changing over time, for example. Another idea, and one that is terribly
exciting, is that we’re seeing some pattern imprinted on the Universe
from before the Big Bang. I know, that sounds crazy, but it’s not completely crazy. My friend and cosmologist Sean Carroll has some detail on this.
We may be seeing something so big in extent it’s happening over
scales we literally cannot see. It’s like having a house built on a
slight incline. Standing in one room you might not notice it, but
measuring the elevation in a room on one side of the house versus one
all the way on the other side might show the discrepancy. And even then,
it only gives you a taste of how big that hill might be.
We’re seeing that on a cosmic scale. The Universe itself appears to be slightly canted, and we only get a hint of it when we take the measure the entire Universe.
Everything
I am entirely and thoroughly delighted by these new results.
As a scientist, of course, I like it when we get better measurements,
more detail, refined numbers. That’s how we test models, and it helps
us understand our ideas better.
But I’m human, and a big part of my brain is still reeling from the
fact that we can accurately measure the age of the Universe at all. We
can figure out what’s in it, even when most of it is something we cannot
see. We can determine not only that it’s expanding, but how quickly.
And best of all, we see that the Universe is doing things we still
don’t understand. It’s showing us that there is still more out there,
things occurring on so vast a canvas that it both crushes utterly our
sense of scale and expands ferociously our imagination.
Every day, we get better at learning what the Universe is doing. And the work continues to find out how. It may even lead us to the answer of the ultimate question of all: why?
If that answer exists (if the question even makes sense), and we can
understand it, then we are making our first steps toward it right now.
I still hear some people say that science takes the wonder out of life. Those people are utterly and completely wrong.
Science takes us to the wonder.
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