A simple comparison of Pluto’s size with other planets, explaining why its small scale influenced its reclassification.

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

It’s a small world after all, because today, we’re shrinking Earth to the size of Pluto. But if our planet was this tiny, how ...

President Donald Trump and his NASA administrator are reviving the Pluto debate again — apparently at the urging of “Star ...

Researchers used data recorded by Juno in 2021 and 2022, after NASA granted an extension to the spacecraft’s operations upon completing a five-year science campaign at Jupiter. Juno remains in good ...

We took Andy Weir to a science museum and watched him nerd out with an astrophysicist and about making "Project Hail Mary" ...

Gas giant Saturn has significantly extended its "who has the most moons in the Solar System" competition, with 11 more moons ...

Add Yahoo as a preferred source to see more of our stories on Google. Is Pluto a planet? What's up with the "space jellyfish?" And are aliens real? Astrophysicist, speaker and author Neil deGrasse ...

Enter Pluto TV's fan contest for a chance to watch The X-Files in a top-secret desert location, complete with X-Files-themed snacks and more!

The world is full of surprising facts about the Earth and how we interact with it, even when we don’t understand or ...

The Solar System is a weird place filled with incredible physics and geological oddities that often break down in human terms ...

In our solar system, Jupiter is the undisputed king. If you added more mass to Jupiter, it wouldn’t actually get much bigger ...