October 3, 2007—Tomorrow marks fifty years since the Soviet Union launched Sputnik 1, the world's first artificial satellite, ushering in a new age of exploration—and competition.© National Geographic (AP)
Get our news delivered directly to your desktopfree.
How to Use XML or RSS
SPACE PHOTOS THIS WEEK: Tiny Galaxy, Sun's Iron, More
Stuck Mars Rover About to Die?