The infrasound stations belonged to the Comprehensive Test Ban Treaty Organisation, an international body that is designed to watch the Earth for nuclear weapons tests. It is likely not the only source of data on the strike. Both the United States and Russia have satellites in geosynchronous orbit that watch for the heat signatures of missile launches and warhead re-entries. The US military has released data on meteor strikes in the past, but it is unclear whether they will do so for today's event.
Klinkrad says it would have been tough to give warning of the blast. In addition to being relatively small in size, the rocky meteoroid was likely dark in color, making it even harder to spot against the backdrop of space. "We just have to live with it," he says.