Last August, the European Space Agency (ESA) launched two Galileo satellites into the wrong orbit. It made a lot of news because they weren’t just a little bit off–the satellites were roughly 2,000 miles off target. Talk about an ‘oops’ moment. Here at GPS Tracklog, we followed the developments as they happened, so you probably remember that both satellites were eventually successfully maneuvered to slightly better orbits.
I have to admit that I read a lot more about the satellites than I actually wrote about here on the blog. At the time, the only information was available about the incorrect orbits was likely literally written by rocket scientists, and finding ways to translate (and even understand) exactly what was happening was a little challenging. So, now that everything is mostly in the clear, the ESA has released a document explaining in non-rocket science terms exactly what happened and how it was fixed. read more








