From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...

Researchers have discovered chemical fingerprints of Earth's earliest incarnation, preserved in ancient mantle rocks. A ...

With water being so important to life on Earth, scientists often look for it on exoplanets. But some of those worlds might ...

Astronomers have discovered a planet orbiting a star that resembles the fictional Vulcan home of Spock in Star Trek.

Alfreðsson told RUV, Iceland’s national public broadcasting service, that the mosquitoes were the first ever spotted on ...

A newly discovered space rock zoomed safely by Earth on Wednesday (Oct. 15) at only about a quarter of the average distance ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

A newly discovered dwarf planet could hold the key to unlocking the mysteries of our solar system’s outer reaches — but what could it mean for humanity's future in space?

Astronomers have spotted a free-floating ‘rogue’ planet, named Cha 1107-7626, that is going through a massive growth spurt, ...

Millions of years before blue oceans and wandering continents, the Earth in its early days was a molten, tumultuous planet — ...

When a Mars-sized meteorite slammed into Earth billions of years ago, the impact completely reset any and all chemical ...

The celestial object is what scientists call a quasi-moon — an asteroid that orbits the sun but appears to move alongside ...