In the name of open science, the multinational scientific collaboration COSMOS on Thursday has released the data behind the largest map of the universe. Called the COSMOS-Web field, the project, with ...

"It would be amazing if a simple rotation of the universe was the origin of dark energy." What is dark energy? Why does dark energy seem to be weakening? Is our universe part of a larger multiverse?

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from dark-energy observatories. After expanding to its peak size about 11 billion ...