universe

Cosmologists have a problem: Their measurements of the rate of expansion of the universe don't agree. And a new, highly accurate measurement of variable stars could deepen this 'Hubble trouble.'

The Cosmic Seahorse galaxy is seen through a gravitational lens in a newly released image from the James Webb Space Telescope.

The James Webb Space Telescope's ability to study the early universe has been solidified by the confirmation that it has imaged four galaxies as they were just 350 million years after the Big Bang.

Hot gas has been detected in a young proto-galaxy cluster in the early universe for the first time, shedding more light on how cluster components come together.

NASA has selected Firefly Aerospace to land payloads on the moon and send another into orbit to provide communications with the lunar far side.

A few years from now, a small radio telescope on the far side of the moon could help scientists peer into the universe's ancient past.

Scientists have proposed a way that the universe could stop expanding, ending in a 'Big Crunch' that resets space and time as we know it.

The largest two-dimensional map of the sky over Earth ever created just got even larger now covering almost half the sky over Earth.

The only known filmed interview with physicist and Catholic priest Georges Lemaître, who originally proposed the Big Bang theory, has been found on a video that was lost nearly 60 years ago.