asteroid 小行星

asteroid
繁：小行星
简：小行星

天文學家日前發現，一顆似乎來自於太陽系之外的小行星(也可能是一顆彗星)「路過」太陽系。如果確認的話，它將是天文學家觀察並確認的首個「星際物體」。

系外來客？ 天文學家發現小行星「路過」太陽系（2017年10月29日）。文匯報，取自 http://news.wenweipo.com/2017/10/29/IN1710290014.htm

“If further observations confirm the unusual nature of this orbit, this object may be the first clear case of an interstellar comet,” the report notes. A second report, published later the same day, redesignated the object as an asteroid on account of new analysis of its appearance, giving it the handle A/2017 U1.

Mysterious object seen speeding past sun could be ‘visitor from another star system’. (2017, October 27). The Guardian. Retrieved from https://www.theguardian.com/science/2017/oct/27/mysterious-object-detected-speeding-past-the-sun-could-be-from-another-solar-system-a2017-u1