A new idea about cosmic expansion has emerged that might remove the need for dark matter and dark energy altogether.

Astronomers using the James Webb Space Telescope have discovered the most distant quiescent galaxy ever seen – one that had ...

He deduced that if Einstein's theory were true (and there had been good evidence for it since 1919), it meant the universe must be expanding ... named his theory "big bang." ...

A new theory challenges the standard model of cosmology, arguing that dark matter and dark energy are not the forces behind ...

A paper published in 2024 theorizes that time may have existed before the Big Bang, but we're still not entirely sure.

Elusive black hole radiation predicted by Stephen Hawking may have influenced the way the universe took shape after the Big Bang, new research suggests. Skip to main content Open menu Close menu ...

During the Big Bang, the universe expanded and cooled. Galaxies are moving away from each other. The further away the galaxies are, the faster they are moving apart. Space is expanding.