But the Big Bang theory predicts that about 5% of the universe's contents should be atoms made of protons, neutrons and ...

The universe looks bright and familiar when we look up at the night sky. We see stars, planets, galaxies, and glowing clouds ...

Using NASA's James Webb Space Telescope, astronomers have spotted two rare kinds of dust in the dwarf galaxy Sextans A, one ...

This early galaxy hosts as much as 30% of the oxygen of a fully developed, modern-day one. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A ...

The European Space Agency (ESA) unveiled magnificent new images from its Euclid space telescope, representing the agency's first scientific discoveries from early observations. The project, which ...

On April 24, 1990, all 24,000 pounds of the Hubble Space Telescope were tucked away inside the Discovery space shuttle when it launched into space. Thirty-five years later, NASA says Hubble has proven ...

Our status as milk-producing mammals would not be lost on intelligent aliens studying the history of our astronomy. The ancient Greeks, they would learn, described a milkiness in the night sky. And ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

Mysterious blasts of radio waves from across the universe called fast radio bursts help astronomers catalog matter. ESO/M. Kornmesser, CC BY-SA If you look across space with a telescope, you’ll see ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Chris Impey, University of Arizona (THE CONVERSATION) If you look across space with a ...