Bruce Murray Space Image Library

Raw video: LightSail solar sail deployment test

Please accept marketing-cookies to watch this video.

LightSail's solar sails deploy during spacecraft testing at Cal Poly San Luis Obispo on Sept. 23. For testing purposes, the sail booms were only extended to 90 percent of their full length. They were then incrementally extended so engineers could measure sail tension and record the correct number of deployment motor revolutions.