Foto de stock - Soyuz 4 Flight Participant Mark Shuttleworth, a South African businessman flying to the International Space Station (ISS) under a private commercial agreement with the Russian Aviation and Space Agency (Rosaviakosmos), listens to briefing in the Johnson Space Center's Space Station Training Facility (SSTF). The Soyuz 4 prime and backup crews have toured several other JSC facilities this week, with yet others scheduled. The prime crew members will launch in late April from the Baikonur Cosmodrome, Kazakhstan, to deliver a fresh Soyuz spacecraft to the station for use as a lifeboat. After spending about a week aboard the outpost, they will return to Earth aboard the Soyuz.