expansion

Researchers have found that the universe is expanding at an entirely different rate than previously thought, a groundbreaking discovery.

Hubble Tension

A team of astronomers are trying to figure out what's behind the largest source of matter and energy in the universe: dark energy.

A team of cosmologists claim they have found evidence that the expansion of the universe is caused by "quintessence," a form of dark energy.

Last week, scientists achieved "first light" with the Mayall Telescope's Dark Energy Spectroscopic Instrument. It could teach us about dark energy.