Historic Flyby: Comet to Zoom By Mars This Weekend
Monday, October 13, 2014 - 07:00
in Astronomy & Space
Comet Siding Spring, also known as C/2013 A1, will miss the Red Planet by just 87,000 miles (140,000 kilometers) at 2:27 p.m. EDT (1827 GMT) Sunday. For comparison, the moon orbits Earth at an average distance of 239,000 miles (384,600 km).