RT @NASA: One year after the Chelyabinsk meteor, read about NASA’s plan to redirect an asteroid, which astronauts will explore: http://t.cogo.nasa.gov/1hk0jB3
RT @NASA: One year after the Chelyabinsk meteor, read about NASA’s plan to redirect an asteroid, which astronauts will explore: http://t.cogo.nasa.gov/1hk0jB3