The Labor of Space Exploration

Veteran
Astronaut John M. Grunsfeld, an astrophysicist by background, prepares for his fifth journey into space and third time to the Hubble telescope. Crewmate Michael Massimino, right, helps place Grunsfeld's helmet over his head prior to a simulated space walk in the pool of the Neutral Buoyancy Laboratory.

• Star City, Russia's Cosmonaut Training Center
• The Website of Michael Soluri