As the space shuttle Discovery was on its way to the International Space Station, China successfully launched its first lunar probe.
The Chang'e-1 spacecraft, named after a mythical Chinese goddess, should begin orbiting the Moon on November 1. It will spend a year studying the lunar surface. China says that this latest mission is part of a program that will place an unmanned vehicle on the Moon by 2012. You can watch a video of the launch here.—Gregory Mone
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.