Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for ...

“Mars, can you please clean up your Legos?” “Jupiter, finish your peas.” “Don’t pull the cat’s tail, Mercury!” ...

A rocky planet nearly 50 light-years away appears to be airless, dark, and covered in volcanic or weathered rock, according ...

Talk about a hot mess. Scientists have uncovered a hellish “lava world” where temperatures soar to a blistering 2,700 degrees Fahrenheit — hot enough to melt rock into a churning ocean of magma and ...

The potential planets were detected using data from NASA's Transiting Exoplanet Survey Satellite.

When worlds collide…suns act squirrely. Astronomers have witnessed a rare and violent cosmic crash between two planets, and they say the fallout could teach us about the formation of our world. The ...

Nasa's James Webb Space Telescope has detected water vapour, carbon dioxide and sulphur dioxide in the atmosphere of a ...

Becca Caroline explains that scientists have discovered that the planet, TRAPPIST-1e, exists in the habitable zone around its ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

The interiors of Uranus and Neptune may be rockier than scientists previously thought, a new computational model suggests — challenging the idea that the planets should be called "ice giants." The new ...