UPDATE (12:35 p.m.): Well, now the satellite’s orientation has shifted, so the Upper Atmosphere Research Satellite might land in the U.S., after all. Keep calm and carry on, people.

We love space, astronauts and science around these parts. But we wouldn’t really be very honest if we weren’t slightly unnerved at the fact that when a defunct six-ton satellite is going to come crashing to Earth, NASA isn’t exactly sure where it is going to land.