quinta-feira, 21 de março de 2013

The Universe according to Planck

ESA's Planck satellite has delivered its first all-sky image of the Cosmic Microwave Background (CMB), bringing with it new challenges about our understanding of the origin and evolution of the cosmos. The image has provided the most precise picture of the early Universe so far. Read more.
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.

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