Earlier research held that meteorite impacts from the solar system's early days were a major source of Earth's water.

For a long time, scientists assumed that Earth's water was delivered by asteroids and comets billions of years ago. This coincided with the Late Heavy Bombardment (ca. 4.1 to 3.8 billion years ago), a ...

The first of these total solar eclipses, on Aug. 12, 2026, will grace parts of Greenland, Iceland and Spain. The second, on ...

Look high above the southern horizon at sunset on Jan. 25 to find the moon with its right half illuminated by direct sunlight ...

NASA’s Artemis 2 mission is no mere test flight. The crew will partake in some seriously mind-blowing science during their 10 ...

The huge 1,600-mile (2,500-kilometer) wide expanse of the South Pole–Aitken Basin extends considerably onto the far side of ...

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Do you know which planet could float in a giant bathtub? Discover the science behind its low density, its hundreds of moons, ...

Olympus Mons is a giant volcano on Mars. It is the tallest mountain in space. It is almost three times higher than Mount ...

On Earth, deep-sea vents may have given rise to the planet’s first life. But nothing of the sort seems to be happening at the ...

"Recent studies suggest that the lunar farside experienced a magma ocean evolution similar to that of the nearside," the team ...

Here are the sci-fi, fantasy, horror, animated, and superhero movies we're most excited about coming out this year.