The young sun may have captured several Mars- or Mercury-size exoplanets that now orbit in the outer reaches of the solar system, but identifying them will be extremely challenging.
First Known Interstellar Object Already Crashed on Earth a Decade Ago popculture.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from popculture.com Daily Mail and Mail on Sunday newspapers.
EarthSky | Did an interstellar meteor hit Earth in 2014? earthsky.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from earthsky.org Daily Mail and Mail on Sunday newspapers.