Scientists are almost sure that there is a ninth planet. But a study by Japanese astronomers hints that this might not be true. A new cosmic body called a sednoid has been discovered near the Kuiper ...

The discovery challenges findings made by Voyager 2, which collected data suggesting Uranus, unlike other giant planets in ...

A team of international astronomers, including a University of Michigan doctoral student, were the first to publish the ...

A cross July 14-15, 1965 (depending on your time zone), the Mariner 4 mission was doing something incredible. This early NASA ...

Two meteorites found in the Sahara in 2023 might be from Mercury, a study suggests, but doubts remain due to how little is known about the planet closest to the sun.

WASP-121b, an already unusual planet, might have a remote origin that explains some of its peculiar properties—from iron rain ...

Volcanic planets with static crusts, called Ignan Earths, can maintain liquid oceans and temperate climates favorable to life.

Scientists have found that Uranus is emitting its own internal heat — even more than it receives from sunlight — and this ...