'NASA is studying the possibility of a manned mission to one of these hurtling objects; it could help with deflection plans'
asteroids
POPULAR SCIENCE BEST OF 2007: NASA is studying the possibility of a manned mission to one of these hurtling objects; it could help with deflection plans
NASA is studying the possibility of a manned mission to one of these hurtling objects; it could help with deflection plans
NASA is studying the possibility of a manned mission to one of these hurtling objects; it could help with deflection plans
POPULAR SCIENCE BEST OF 2007
asteroids
POPULAR SCIENCE BEST OF 2007