A rare planetary alignment is lighting up the night sky—here’s how to see it
Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...
National Geographic news4 年
Our Solar System
This story appears in the July 2013 issue of National Geographic magazine ... unaltered material that everything formed from in the solar system.” Comet DustIn a NASA clean room a scientist ...