Carl Erwin Walz (born 6 September 1955) is a retired NASA astronaut currently working for Orbital Sciences Corporation's Advanced Programs Group as vice president for Human Space Flight Operations.

He enjoys piano and vocal music, sports,[1] and was notably the lead singer for Max Q, a rock-and-roll band composed of astronauts.

[1][5] From 1979 to 1982, Walz was responsible for analysis of radioactive samples from the United States Atomic Energy Detection System at the 1155th Technical Operations Squadron, McClellan Air Force Base, California.

Walz also participated in a 7-hour spacewalk (EVA) to evaluate tools for the Hubble Space Telescope servicing mission.

The mission completed 236 orbits of the Earth, traveling 6.1 million miles, setting a new flight duration record for the Shuttle program.

Wearing the Russian Orlan space suit, Walz logged 11 hours and 52 minutes of EVA time in two separate spacewalks.

The Expedition 4 crew returned to Earth aboard STS-111, with Endeavour landing at Edwards Air Force Base, California, on 19 June 2002.

[10] This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration.