A 50-foot space rock (2015 HD1), similar in size to the one that slammed into the atmosphere two years ago, will skim Earth at a distance of about 36,700 miles (59,063 kilometers) or 0.2 Lunar Distance (LD) on April 21st, 2015.
A 50-foot space rock (2015 HD1), similar in size to the one that slammed into the atmosphere two years ago, will skim Earth at a distance of about 36,700 miles (59,063 kilometers) or 0.2 Lunar Distance (LD) on April 21st, 2015.