Pluto was discovered less than 100 years ago, and for 20 years, it was no longer considered a planet. NASA chief wants to ...

How many exoplanets orbit M-dwarfs stars, the latter of which is the most common type of star in the galaxy? This is what a ...

Before telescopes spotted Neptune, mathematicians used Newton’s laws to predict its existence from Uranus’s orbital oddities. That same method fuels today’s search for the elusive Planet Nine. It’s a ...

Astronomers now estimate there is at least one planet for every star in our galaxy. These worlds, called exoplanets, are ...

"It doesn't present any danger to anyone, though it does highlight a certain carelessness about how leftover space hardware ...

New research finds the galaxy's most common stars host many super-Earths but almost no sub-Neptunes, reshaping planet ...

Around stars like our Sun, the most common planets aren't giant Jupiters but smaller cousins: sub‑Neptunes, which resemble ...

Can't take in a World Cup match in person? Hosting a watch party can be just as fun. Read on for your ultimate hosting guide, ...

Among the quirky characteristics of this distant dwarf planet are its moons and the way they orbit Pluto – or to be more ...

It is the first of two meteor showers from Halley’s Comet that will be visible from Earth this year. Read more at ...

NASA and the European Space Agency spotted a cosmic object that was splitting apart before it exploded, something not a ...