Space.com

What's Hot This Week Bus-Size Asteroid Buzzes Earth in Close Flyby by Tariq Malik, SPACE.com Managing Editor The asteroid 2012 BX34 came within 36,750 miles of Earth. GOP Candidates Clash Over US Space Exploration Future by Mike Wall, SPACE.com Senior Writer The four remaining contenders discussed NASA and spaceflight last night in Florida. Sponsored by: How the Apollo 1 Fire Changed Spaceship Design Forever Wallpaper: 26 Alien Planets Around 11 Different Stars