2017年10月29日 星期日

Naming An Interstellar Visitor

Something Visited Our Solar System From Interstellar Space, NASA

"A small, recently discovered asteroid -- or perhaps a comet -- appears to have originated from outside the solar system, coming from somewhere else in our galaxy. If so, it would be the first "interstellar object" to be observed and confirmed by astronomers. This unusual object -- for now designated A/2017 U1 -- is less than a quarter-mile (400 meters) in diameter and is moving remarkably fast. Astronomers are urgently working to point telescopes around the world and in space at this notable object."



from NASA Watch http://ift.tt/2iL2uoZ
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