The two keys to Edwin Hubble 's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to calculate ...

After seven years of work, Canada's CHIME telescope has a measurement of dark energy from 2019. More detailed studies are ...

The universe is full of surprises, and Saul Perlmutter knows that better than most. A professor of physics at UC Berkeley and a senior scientist at Lawrence Berkeley National Laboratory, Perlmutter ...

Tiny magnetic fields created shortly after the Big Bang may help explain the long-running disagreement over how fast the universe is expanding. Detailed simulations show that these primordial fields ...

Measurements of ancient light from the cosmic microwave background suggest that the universe is remarkably flat. But that ...

When you bake a loaf of bread or a batch of muffins, you put the dough into a pan. As the dough bakes in the oven, it expands into the baking pan. Any chocolate chips or blueberries in the muffin ...

How fast is the universe expanding right now?Please measure it as accurately as possible.If you were told that, you might ...

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously thought, a new study suggests. "Remarkable" findings published today in ...

Learn how the existence of dark energy is being challenged due to new evidence that the expanding universe is actually "lumpy". The enigmatic idea of dark energy has consistently been referenced to ...