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
![The planet Venus is dry thanks to water loss to space as atomic hydrogen. In the dominant loss process, an HCO+ ion recombines with an electron, producing speedy hydrogen atoms (orange) that use CO molecules (blue) as a launchpad to escape.](https://www.popsci.com/wp-content/uploads/2024/05/06/venus.jpg?w=800)
Science
Why Venus is so dry
![Buzz Aldrin on the moon next to American flag.](https://www.popsci.com/wp-content/uploads/2024/04/03/as11-40-5875large.jpg?w=800)
Engineering
NASA is designing a time zone just for the moon
![a swirling, purple galaxy in space](https://www.popsci.com/wp-content/uploads/2024/04/03/chaotic-galaxy.jpg?w=800)
Science
Older galaxies are more chaotic
![Odie the lunar lander is not dead yet](https://www.popsci.com/wp-content/uploads/2024/02/27/odie-0.jpg?w=800)
Engineering