NASA on Tuesday announced they’re tracking an at least 50-meter wide asteroid that could potentially collide with Earth on February 14th, 2046, making for a bloody Valentine’s Day for unfortunate folks in its path, CBS News reports. The evil space rock, the chances of striking are estimated at about 1 in 400, could produce an explosion on the scale of the 1908 Tunguska impact in Siberia were it to strike Earth. And the Tunguska impact was bad.