Do we really need dark energy to explain cosmic expansion?
Bigger, Stronger, Faster
New observations of lensed quasars show the Universe is expanding faster than expected. But these results raise questions about the assumptions of our cosmological models.
The Constant Of Time
The rate of cosmic expansion has changed over time. So why does it look like a constantly expanding universe?
A Million Points Of Light
A new survey of more than a million galaxies supports the standard model of cosmology.
Bell, Book, and Candle
Dark energy isn’t some magical idea we’ve dreamt up to fit our models.
New Evidence Challenges Rate Of Cosmic Expansion
A new measurements for the Hubble parameter raises interesting questions, but whether it leads to a new understanding of cosmic expansion and dark energy is yet to be seen.
The Incredible Shrinking Universe
Most of the universe we can observe is forever beyond our reach.
Standardizing the Candle
The evidence for dark energy lies in our ability to relate the redshift of a galaxy with it’s distance. To prove dark energy is real we have to measure redshift and distance independently, and that takes a bit of doing.
So You’re Saying I’ve Got a Chance
New research questions the claim that the universe is accelerating. But this new work isn’t as strong as some claim.