Defend Earth
An asteroid or comet headed for Earth is the only
large-scale natural disaster we can prevent.
Working together we can help save the world.
Learn More
Together we advance space science
and exploration. Are you in?
Sign up for email updates
Your Place In Space
The Planetary Society funds promising space science projects, advocates for a stronger NASA, and connects the world to the adventure of space exploration.
Join Us
This Week On
Planetary Radio
Host Mat Kaplan is joined by Planetary Society colleagues and special guests every week. Subscribe and never miss an episode.
