We live in a star system more alien than most

The way that our solar system was shaped by pressure bumps and rings made it unusual in more than one way.

By Elizabeth Rayne 2 weeks ago

Some planets want to be giants when they grow up (and they grow faster than we thought)

Planets can grow into monsters in much less time than something that huge was thought to reach "adulthood."

By Elizabeth Rayne 1 month ago

Newly found ultrahot exoplanet has a 16-hour year… and is also doomed

Exoplanet has the shortest orbit ever seen for a gas giant.

By Phil Plait 1 month ago

Hubble takes a series of giant outer planet family portraits

Gas giant photos c/o Hubble.

By Phil Plait 2 months ago

Where *isn't* Planet 9?

Astronomers are still looking for a possible giant planet far beyond Neptune.

By Phil Plait 2 months ago

BepiColombo's first kiss with Mercury!

By Phil Plait 3 months ago

Rogue planets need no star, but they might have life as we never knew it

By Elizabeth Rayne 3 months ago

Want to find Planet Nine? Here's a treasure map.

By Phil Plait 5 months ago

Astronomers find an exoplanet where an exoplanet shouldn’t be

By Phil Plait 9 months ago

Alien raindrops falling on your head could be very similar to Earth's

By Jeff Spry 9 months ago