A 36-foot-wide asteroid pulled into Earth’s orbit has become a second "mini-moon" for almost two months. But this ...

A new study reveals that the asteroid 2024 PT5, which has been orbiting Earth for 2 months, may have a "lunar origin." ...

For years, the idea of a mysterious “Planet Nine” lurking on the edges of our solar system has captivated astronomers and ...

To see the planet's blue-green hue, which is caused by the absorption of sunlight from methane gas, you'll need a small ...

The Red Planet and the moon visit the Cancer constellation, the Crab. The moon and Mars will share a close approach in the ...

Ever since William Herschel discovered Uranus in 1781, astronomers have been eager to find new planets on the outer edge of ...

GSAT-N2's launch was the third for SpaceX in less than a day. The company launched a satellite for the Australian telecom ...

An international team of scientists has found a fascinating new planetary system around a star similar to our sun. The system, located about 750 light-years from Earth, contains two planets, including ...

An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a sun-like star, ...

On 1971, Mariner 9 became the first spacecraft to orbit Mars. At the time, scientists didn't know much about the Red Planet.

Joel Achenbach writes about science and politics for The Washington Post's National desk. He has been a staff writer for The Post since 1990. He started the newsroom’s first online column, Rough ...

WASHINGTON (AP) — Donald Trump will return to the White House accompanied by a crew of longtime friends and aides as well as newfound, splashy allies. The Republican president-elect has barely ...