Share to linkedin... [+]
When we combine all the observations we have — from supernovae, from large-scale structure, from the fluctuations in the cosmic microwave background, etc. — they all point to a single, unified picture of the Universe: with 5% normal matter, 27% dark matter, and 68% dark energy.that expanded faster in the past, but where distant galaxies are accelerating in their recession today. This is a modern version of, extending thousands of times farther than, Hubble's original work.
Even with recent controversies and tensions, this remains the consensus picture of the Universe: the one that's consistent with the full suite of data we have, even including the present uncertainties.three independent sources: supernovae, the CMB and BAO . Note that even without supernovae, we’d need dark energy for certain, and also that there are uncertainties and degeneracies between the amount of dark matter and dark energy that we'd need to accurately describe our Universe.
When you start looking at why, it's because the value of the cosmological constant is proportional to a mass/energy value raised to the 4th power, and the"default" value that goes in there is a combination of three fundamental constants: GeV, known as the Planck mass/energy. Or you could introduce a new idea that leads to different effects from what we typically expect in our Universe. Any model that offers significantly different observables than a cosmological constant can be put to the test.critical, dark-energy-free Universe . Note that the blue line behaves differently from dark energy. New ideas should make different, observably testable predictions from the other leading ideas.
Epstein didn’t kill himself
Easy, the multiverse action is ready to be tested