Where did we come from? Are we alone in the Universe? We can only answer these questions by exploring the planets and other worlds of our solar system and beyond. Learn why these worlds are so important, and how you can get involved.
What is a Planet?
It's right there in our name: The Planetary Society. But what is a planet? This seemingly simple question is the subject of much debate.Learn More
These are some of the most compelling ideas on how to terraform Mars into a habitable, Earth-like world for future explorers.
The data come from NASA’s Pioneer Venus Multiprobe mission, which deployed a series of probes into the planet’s clouds.
In 1975 and 1982, 4 of the Soviet Union’s Venera probes captured our only images of Venus’ surface.
Did scientists detect a signature of life in Venus' clouds? Or will the bombshell finding be proven false?