A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Tianwen-2 will become the first Chinese spacecraft to bring home celestial material from beyond the Moon, where China has landed two previous sample retrieval missions. China's exploits at the Moon ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

Astronomers have just discovered a new celestial body in our solar system that could challenge major space theory. 2017 OF201 ...

In the vast expanse of space, an estimated 1 million near-Earth objects (NEOs), also known as near-Earth asteroids, are ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

B rocket is being fueled for launch of a complex deep-space mission targeting both a near-Earth asteroid and a comet.

Starting June 30, 2025, all car seats sold in the U.S. must meet new federal safety standards aimed at improving protection during side-impact collisions. The curious minds at What If wonder if Earth ...

Stars that pass close to the solar system could pull planets out of alignment, sending them hurtling into the sun or out into ...