Join Donate

Alan Harris

Use when no other thumbnail exists

Alan Harris

Latest Planetary Radio Appearance

Defending Earth From Asteroids

March 15, 2004 • 0:28:36

Defending Earth From Asteroids

Bill Nye and people
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

LightSail
LightSail 2 Sweepstakes

Help power LightSail 2's journey and support the mission by entering to win a complete LightSail swag kit.

Learn More

You are here: