So you want to fly spacecraft?

Today’s landing of a spacecraft on a comet is truly a stupendous engineering feat. ESA Rosetta spent 5 years, including three flybys of Earth and one of Mars in order to slingshot in order to land a 3-ton machine on a 4-km round rock moving at 135,000 km/hour. (meaning that the comet moves ten times it’s entire length every […]