Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action ...

NASA chief Jared Issacman appears to be among those who support Pluto being reclassified as a planet. Could President Trump sign an executive order?

"What other types of planets are waiting to be uncovered?" ...

The results, published in February in the journal Monthly Notices of the Royal Astronomical Society, show that under these ...

A study led by the University of Oxford has identified a new type of planet beyond our solar system—one that stores large ...

We're starting to see just how exceptional our own solar system and its history is, as more exoplanets are discovered. A ...

Earth-size planet (HD 137010 b) found orbiting a nearby star once a year, making it a promising target for finding life.

Earth’s gravity has a lot to do with what people think is up and what is down. Things fall down toward the ground, but that ...

Humans were not designed for space. Ironically, because we insist on going there anyway, scientists now know from studying astronauts that the lack of Earth’s gravity can wreak health havoc, such as ...

In 2022, a NASA spacecraft intentionally barreled into the tiny asteroid Dimorphos during a planetary defense test. New observations show how it went.