Taking advantage of laser light's ability to gently push and pull microscopic particles, researchers have created what they're calling the world's smallest wrench.
To the delight of NASA engineers, the NanoSail-D nanosatellite has unfurled its 100-square-foot polymer sail in low-Earth orbit and is operating as planned after a month of inactivity.
Yesterday, NASA for the first time successfully ejected a nanosatellite from a free-flying microsatellite, marking a big step forward for efforts to clear space junk using solar sails.
