On July 26, NASA's OSIRIS-REx spacecraft fired its engines for about 63 seconds to slightly thrust itself onto a course closer to Earth. Preliminary tracking data indicates OSIRIS-REx changed its velocity, which includes speed and direction, by 1.3 miles, or 2 kilometers, per hour. It's a tiny but critical shift; without course adjustments like this …
NASA’s OSIRIS-REx Spacecraft Adjusts Course to Get Closer to Earth

Read Full Post