,560MPH, 12.32 km/h. That was the whizzing speed of NASA’s spacecraft Deep Impact as it approached comet Hartley on its EPOXI mission. Here’s a time lapse video of its complete trajectory, just released by the Jet Propulsion Laboratory in Pasadena, California.
https://gizmodo.com/beautiful-first-images-of-comet-hartley-2-5681690
