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LightSail's Atlas V Rocket Rolls Into Position

On Tuesday, May 19, a United Launch Alliance Atlas V rocket carrying The Planetary Society's LightSail spacecraft rolled out to the launch pad. Liftoff on the 20th was a success! In this video, the Atlas is rolling, rolling, rolling—and getting into place for the launch!



LightSail Lifts Off

On May 20, 2015, our first LightSail prototype launched from Cape Canaveral aboard an Atlas V rocket.



Solar Sailing

This very special episode of RSF is here just in time for the LightSail test flight on May 20th. Dr. Bruce Betts and his new friend tell you about the power of light and solar sailing!



Buy A Brick: Claim Your Place in Our Space

You know The Planetary Society has always been Your Place In Space. Now you can join us in claiming some space here on Earth by purchasing a piece of our new headquarters through our Buy a Brick Campaign (



Kickstart LightSail

To back this project go to:



How Planets Got Their Names

Planet George? Dr. Bruce Betts has this week's Random Space Fact!



Mars Declaration from 1988

This throwback is long, but worth the watch! Hear the 1988 Mars Declaration from The Planetary Society as read by Carl Sagan, Gene Roddenbery, Isaac Asimov, Ann Druyan, Thomas Paine, Louis Friedman, Bruce Murray, Steve Allen, and Diane Ackerman just to name a few. Enjoy this lengthy piece of our history!



Intro Astronomy 2015. Class 13: Galaxies, the Universe, Life

Lecture 13 of Dr. Bruce Betts' 2015 online Introductory Planetary Science and Astronomy course covers galaxies (our place in the Milky Way, types of galaxies, Hubble Deep Field), the Universe (determining distances, expansion of the universe, Big Bang theory and evolution of the universe, WMAP and Planck results, dark matter, dark energy, neutrinos), and life in the universe (Earth life requirements, astrobiology, SETI). Recorded at California State University Dominguez Hills.



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