When astronomers search for planets that could host liquid water on their surface, they start by looking at a star's habitable zone. Water is a key ingredient for life, and on a planet too close to ...

Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...

This weekend the planets encourage us to hold still, emote, play board games, watch old movies, pull out photo albums, and ...

When a meteor streaks across the sky, it's not just beautiful. It's nature's way of delivering a time capsule to Earth.

The Solar System is more than just planets; it is home to a dazzling variety of moons, each with its own unique charm. Some ...

NASA's Perseverance rover spotted a possible space rock on the surface of Mars. The meteorite's nickname is 'Phippsaksla.' ...

Simulations show that subsurface oceans on small moons may hit boiling conditions, potentially creating features like Miranda’s distinctive ridges.

Space has a knack for bending our sense of scale. The Moon feels close enough to touch—after all, we see its craters with ...

Sky This Week is brought to you in part by Celestron. Friday, November 21 The solar system's seventh planet, the ice giant Uranus, reaches opposition this morning at 7 A.M. EST among the stars of ...

It’s only taken a few hundred years, but the “Spice Islands” region of eastern Indonesia — now known as the Maluku Islands — is once again attracting attention.

Pluto's largest moon, Charon, likely formed through a capture event in the early, crowded Kuiper Belt. Three-body encounters ...