... No asteroid or comet is known to be on a collision course with Earth. ... This earth-approaching asteroid was discovered by SpaceWatch astronomer Jim Scotti in December of last year. ... When the Moon's shadow reached out and touched the Earth last month, the result was a Solar Eclipse. ... This total solar eclipse was the last visible from the Americas for this millennium. ... Aurora Over Alaska . ... Aurora light results from solar electrons and protons striking molecules in the Earth's atmosphere...