Foto de stock - Soyuz 4 Flight Participant Mark Shuttleworth (second right), a South African businessman flying to the International Space Station (ISS) under a private commercial agreement with the Russian Aviation and Space Agency (Rosaviakosmos), interfaces with communications systems during a familiarization tour of the Space Station Training Facility at the Johnson Space Center (JSC). Others pictured, from the left, are backup Soyuz 4 Commander Gennady Padalka, a Russian cosmonaut; Chris Benson, a United Space Alliance (USA) crew trainer; and backup Soyuz 4 Flight Engineer Oleg Kononenko, a Russian cosmonaut. The Soyuz 4 crew has toured several other JSC facilities this week, with yet others scheduled. The 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 spacecraft now attached to the station.