Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

Interstellar comet 3I/ATLAS has just pulled off the kind of stunt that keeps planetary scientists humble. After racing ...

The solar system’s largest planet shines bright as the Moon wanes and Saturn’s moons dance in the sky this week.

On Saturday (Jan. 10), for example, we will see three satellites on one side of Jupiter (going outward from the planet: Ganymede, Io and Europa ), while the fourth ( Callisto) remains all by itself on ...

Explore the full archive of TIME, a century of journalism, insight, and perspective, with AI that helps you research, connect ...

A solar conjunction occurs as Venus' orbit carries it into alignment with the sun and Earth. Venus will align with the sun ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo ...

Three supermoons will lighten up the night skies in 2026, the stunning result when a full moon inches closer to Earth than ...

Long before humans walked the Earth, your solar system had a brush with two blazing blue stars that passed surprisingly close ...

Planetary alignments, a total lunar eclipse, and meteor showers are highlights to look for in the coming year.

Lineups of planets have often attracted attention for their supposed effects on human affairs—and for several days in early January, five solar system bodies are arranged in a n ...