Personal satellites that fly into space
Unwrapping devices like smartphones and tablets is sure to bring people joy on Christmas Day. Free software and plummeting hardware costs have made designing and building new gizmos that were once the fantasies of "Star Trek" a reality. Search around the Internet and you'll find guides and instructional videos on how to build everything from automatic plant waterers to remote-controlled drones. Entrepreneurs like Elon Musk and his company SpaceX, along with countless researchers and weekend warriors... Читать дальше...