Join Donate

Roald Sagdeev

Use when no other thumbnail exists

Roald Sagdeev

Latest Planetary Radio Appearance

Former Soviet Space Program Director Roald Sagdeev on the Sputnik 1 Anniversary

October 04, 2004 • 0:28:50

Former Soviet Space Program Director Roald Sagdeev on the Sputnik 1 Anniversary

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: