We know how the universe began. An event we call the Big Bang started it all about 13.8 billion years ago. How the universe ends, though, is an open question. The path forward depends on the ...

For years, we’ve believed that the universe is a vast, uniform expanse, with the same properties stretching across the cosmos. But what if that’s not the case? A surprising new discovery suggests that ...

A new JWST study finds early galaxies at redshift 6–10 may be nearly as old as the universe at that time. One galaxy even appears older than cosmic age estimates, potentially challenging the standard ...

A physicist proposes that the universe might not be empty but act like a viscous fluid, resisting expansion. This bold idea ...