solar system The solar system is really messed up (and it might mean Planet 9 exists) Blame it on gravity. By Elizabeth Rayne 2 weeks ago The early Earth soaked up interstellar water vapor like a sponge We're awash in a vast cosmic ocean, we just need to drink it up. By Cassidy Ward 3 months ago These two asteroids are extremely young… and used to be just one asteroid An asteroid flew itself apart, making new rocks 2019 PR2 and QR6. By Phil Plait 3 months ago Second-ever Earth Trojan asteroid found! 2020 XL5 shares an Earth-like orbit. By Phil Plait 3 months ago We need to check out this space rock from the edge of the solar system — before it’s too late We shouldn’t miss Sedna when it comes around, because if we do, it won't be back in over a hundred lifetime. By Elizabeth Rayne 4 months ago 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 4 months ago Where *isn't* Planet 9? Astronomers are still looking for a possible giant planet far beyond Neptune. By Phil Plait 6 months ago Why does our black hole have a flaring temper? Sgr A*, our supermassive black hole, keeps flaring, and we could soon find out what sets it off. By Elizabeth Rayne 6 months ago The case of the Centaurs that didn't bark in the night By Phil Plait 7 months ago Tiny grains of alien material in meteorites point to origins in other stars By Phil Plait 7 months ago Load More
The solar system is really messed up (and it might mean Planet 9 exists) Blame it on gravity. By Elizabeth Rayne 2 weeks ago
The early Earth soaked up interstellar water vapor like a sponge We're awash in a vast cosmic ocean, we just need to drink it up. By Cassidy Ward 3 months ago
These two asteroids are extremely young… and used to be just one asteroid An asteroid flew itself apart, making new rocks 2019 PR2 and QR6. By Phil Plait 3 months ago
Second-ever Earth Trojan asteroid found! 2020 XL5 shares an Earth-like orbit. By Phil Plait 3 months ago
We need to check out this space rock from the edge of the solar system — before it’s too late We shouldn’t miss Sedna when it comes around, because if we do, it won't be back in over a hundred lifetime. By Elizabeth Rayne 4 months ago
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 4 months ago
Where *isn't* Planet 9? Astronomers are still looking for a possible giant planet far beyond Neptune. By Phil Plait 6 months ago
Why does our black hole have a flaring temper? Sgr A*, our supermassive black hole, keeps flaring, and we could soon find out what sets it off. By Elizabeth Rayne 6 months ago
Tiny grains of alien material in meteorites point to origins in other stars By Phil Plait 7 months ago
