Solar System
The top news about what's going on in the cosmic neighborhood—from planet nine to the sun, and everything in between.
Latest in Solar System
![A gray asteroid against the black background of our solar system.](https://www.popsci.com/wp-content/uploads/2023/11/07/Asteroid.jpg?w=800)
Science
Why the heck is Earth wet?
![An artist's rendition of the infrared aurora superimposed on a Hubble Space Telescope photograph of Uranus. The planet is blue with a white ring around it and the aurora is shown in red at its poles.](https://www.popsci.com/wp-content/uploads/2023/10/30/uranus-infrared-aurora.png?w=800)
Deep Space
Uranus has a weird infrared aurora
![three electric vehicles for nasa parked in a row](https://www.popsci.com/wp-content/uploads/2023/07/13/canoo-nasa-artemis-vehicles.jpg?w=800)
Electric Vehicles