Scary news: Asteroid may pass Earth by just 6,880km in October
NASA's preparing another round asteroid defence tests, thanks to the October fly-by of a rock that may come within a cosmic whisker of the Earth.
Update: The figures below were later revised by scientists. See our followup story, here. The original article continues below.
Asteroid 2012 TC4 is said rock, and is between ten …
31 Jul 2017