The gas giant WASP-121b, also known as Tylos, has an atmospheric structure unlike any we have ever seen, and the fastest ...

Most people know the theory that an asteroid smashed into Earth — hitting what is now the Yucatán Peninsula — and killed off ...

Previous efforts to map the galaxy's dust were challenged by limited data, but the Gaia mission has provided a treasure trove ...

In world-first observations, the James Webb Space Telescope is watching two distant alien planets "spilling their guts into space" as they rapidly disintegrate — and scientists are elated at what they ...

Plenty of times, a single planet is visible in the night sky, and quite often two. Three or more simultaneously is less common, but not particularly rare. Venus, Mars, Jupiter and Saturn have all been ...

Cold, dark and distant, it was named after the Roman god of the underworld. In Greek mythology, the corresponding god is Hades. The planet's existence had first been suspected more than 30 years ...

The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan.

Canadian and other researchers have confirmed Saturn as the solar system’s undisputed “moon king," after discovering 128 more ...

Even if humanity is a multi-planet species by then, it would be a decided challenge to visit the tiny, distant world, which measures just 1,477 miles in diameter—or little more than half the ...