Celebrating America's 250th birthday, Space.com looks back at what our understanding of space was like in 1776 and what major ...

This week's science news.

Massive galaxies? Dusty black holes? Black hole stars? Scientists have raised a lot of theories around what the crimson blobs ...

The Vera Rubin Observatory has begun an 10-year survey to create a new inventory of our solar system and the Milky Way, and ...

What if our biggest idea about reality is built on a hidden misunderstanding? A new philosophical look at space-time challenges the popular view that the past, present, and future all exist together ...

NASA’s Roman Space Telescope is set to embark on a deep-sky survey that could capture nearly 100,000 cosmic explosions, shedding light on everything from dark energy to black hole physics. Its ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." For over a century, scientists ...

Wormholes are often imagined as tunnels through space or time — shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen. In ...

Many people wonder: if the universe is expanding, is there a point in space that serves as the “centre”? It seems intuitive to ask, how can something expand if there’s no specific starting point? The ...

A new theory from the University of Alaska Fairbanks (UAF) suggests that time, not space-time, may be the true foundation of reality. The idea is that time itself has three dimensions, while space is ...