In a groundbreaking discovery, astronomers have identified a potential dwarf planet candidate, 2017 OF201, buried within ...

The discovery of the Kuiper Belt revealed thousands of icy objects near Pluto, challenging its status as a planet. After the discovery of Eris, astronomers formally redefined “planet” in 2006, leading ...

Since it was stripped of planetary status, Pluto’s defenders have been fighting the decision – and they’re only getting more passionate ...

Picture a star, about half the sun's mass shining with a dim red light. Lumbering around it on a 5,000-year orbit is a huge orb called a brown dwarf, which is much heavier than a planet but still not ...

Picture a star, about half the sun’s mass shining with a dim red light. Lumbering around it on a 5,000-year orbit is a huge orb called a brown dwarf, which is much heavier than a planet but still not ...

The delicate balance of the entire Solar System exists in a gravitational dance between planets. Swap the orbits of two of ...

There are many ways to scour the stars for intelligent life. You can search for radio signatures whose repetitions suggest ...

Astronomers have discovered two exoplanets orbiting a red dwarf 337 light-years away. One could be a scorching lava world, ...

On Aug. 24, 2006, Pluto was reclassified as a “dwarf planet.” Credit: Creators.com illustration It was 20 years ago that our solar system lost a planet. Well, it didn’t really go anywhere, but Pluto ...

Astronomers are counting down to using the new Roman Space Telescope to scan the Milky Way for alien moons that might be ...

Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" derives from the term "extrasolar planet," which hints at its existence beyond ...

Boyajian’s Star has baffled astronomers for a decade with its chaotic brightness dips. A new Bayesian analysis by IAC ...