An astonishing discovery comes from the outer reaches of the Solar System: Pluto and Titan, two very different celestial ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

This is the first image of a rare 'minimoon' that loops around the Earth like a dance partner.

The European Space Agency’s Euclid space telescope has discovered 31 of the most ancient quasars ever found – and two of ...

That sharp, briny smell is not the salt, it is a gas made by life, breathed out by tiny ocean creatures too small to see. For ...

To mark the 250th anniversary of the United States, NASA released a striking new image from the Hubble Space Telescope ...

Chinese mission Tianwen-2 released a new image of an asteroid orbiting Earth, which is sometimes referred to as a “quasi-moon ...

The Euclid space telescope has spotted the oldest quasars — the brightest objects in the universe — ever discovered, deepening a cosmic mystery that has been puzzling scientists.

A Wave of Ancient Quasars Discovered from the Dawn of the Universe. VC: W. M. Keck Observatory This artist’s impression shows ...

Skywatchers are going to want to keep an eye on the sky across the U.S. on Tuesday evening. The moon and Saturn conjunction ...

Astronomers have identified the two most distant quasars ever detected, shattering the previous cosmic record and offering a ...

As the glimmer of June’s full Strawberry Moon fades into the night, darker evenings allow for a better view of the Milky Way ...