Media Information
 
 
 
Collection:
NASA Astronomy Picture of the Day Collection
Title:
To Fly Free in Space
Explanation:
What would it be like to fly free over the seas and clouds of Earth? The first to experience such an "untether [ http://www-istp.gsf…]ed space walk [ http://antwrp.gsfc.…]" were NASA astronauts [ http://www.jsc.nasa…] Bruce McCandless [ http://www.jsc.nasa…] and Robert Stewart [ http://www.jsc.nasa…] during Space Shuttle [ http://antwrp.gsfc.…] mission 41-B [ http://images.jsc.n…] in 1984. McCandless, pictured above [ http://images.jsc.n…], used a Manned Maneuvering Unit [ http://www.astronau…] (MMU) to move in and around the cargo bay of the space shuttle. The MMU [ http://galacticvoya…] works by shooting jets of nitrogen [ http://pearl1.lanl.…] and has since been used to help deploy and retrieve satellites. With a mass over 140 kilograms, an MMU is heavy on Earth [ http://antwrp.gsfc.…], but, like everything, is weightless in space. The MMU was replaced in 2001 with the SAFER [ http://antwrp.gsfc.…] backpack propulsion unit.
Credit and Copyright:
STS 41-B [ http://science.ksc.…] Crew, NASA [ http://www.nasa.gov/]
keyword:
MMU
keyword:
fly free
keyword:
space walk
facet_who:
Robert Stewart
facet_when:
2001
facet_when:
1984
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
Johnson Space Center (JSC)
facet_what:
Earth
facet_what:
Space Shuttle Orbiter
facet_when_year:
2001
facet_when_year:
1984
original url:
http://antwrp.gsfc.…
UID:
SPD-APOD-ap020924

To Fly Free in Space
Add To Workspace Export