The future of Russia’s Soyuz rockets could be in doubt after one crashed shortly after lift-off while carrying cargo for the International Space Station.
Investigators are trying to find out why the unmanned craft blew up.
The six crew members on board the ISS have enough supplies to last several months. The station relies exclusively on Russian rockets following the retirement of US space shuttles.
It is a joint project run by NASA, Russia, and other international space agencies.
The next manned flight to the ISS is scheduled for September 22, although NASA says that mission could now be affected.