The Russian Soyuz 2-1A rocket fitted with "the latest Progress resupply vehicle" was on its way to resupply the International Space Station (ISS) with three tons of food and other goods, when contact was lost. The craft had been due to dock with the ISS tomorrow.
The Guardian reports that an anonymous Russian official had confirmed the craft had "started descending".
"It is clear that absolutely uncontrollable reactions have begun," they added. Gulp.
Earlier today, Nasa confirmed the Russians were "troubleshooting" Progress.
"Flight controllers are continuing attempts to communicate with it," it added.
A statement from the Russian space agency is expected later today. Until then, it might be best to stay indoors...