3 years ago
What is the current theory of dark matter?
Explain how scientist think about dark matter. What does dark matter imply about the universes geometry?
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In recent times scientists have discovered the cosmos appears to be filled with not just one, but two invisible constituents - dark matter and dark energy - whose existence has been proposed based solely on their gravitational effects on ordinary matter and energy.
"One way to think of this is that the universe is filled with an invisible fluid that exerts pressure on ordinary matter and changes the way that the universe expands," says Scherrer. His model is extremely simple and avoids the major problems that have characterized previous efforts to unify dark matter and dark energy.
Scherrer's formulation has some similarities to a unified theory proposed earlier this year by Nima Arkani-Hamed at Harvard University, who attempts to explain dark matter and dark energy as arising from the behavior of an invisible and omnipresent fluid that they call a "ghost condensate."
"One way to think of this is that the universe is filled with an invisible fluid that exerts pressure on ordinary matter and changes the way that the universe expands," says Scherrer. His model is extremely simple and avoids the major problems that have characterized previous efforts to unify dark matter and dark energy.
Scherrer's formulation has some similarities to a unified theory proposed earlier this year by Nima Arkani-Hamed at Harvard University, who attempts to explain dark matter and dark energy as arising from the behavior of an invisible and omnipresent fluid that they call a "ghost condensate."
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
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