Topic: Mount Lemmon
Astronomers should dramatically ramp up the sky surveys, not only to better prepare for threats to Earth but also to exploit asteroids' contents, scientists say.
The 460-foot wide asteroid 2011 AG5 could be on a collision course with our planet. But the odds are very small, say scientists.
2010 RF12 and another small asteroid that passed close to earth Wednesday were detected three days before their fly-by, illustrating the improving capability of asteroid-spotting telescopes.
09/08/2010 04:30 pm
In an unprecedented event, two asteroids will pass our planet Wednesday at a distance closer than the moon. Neither rock threatens to strike the earth, say astronomers.
09/07/2010 05:00 pm
With dedication and good timing, amateur astronomers have helped track asteroids and search for planets. NASA is enlisting some for a moon observation mission.
07/23/2009 01:00 am