Answer:

nasa

Answer	Crossword Clue
NASA	Canaveral gr.
NASA	Cape Canaveral gr.
NASA	Glenn's org.

NASA	Mercury gr.
NASA	Sells used LEM's?
NASA	Shuttle gr.
NASA	Skylab gr.
NASA	Von Braun's org.
NASA	Project Mercury gr.
NASA	Space agcy. letters
NASA	Agcy. featured in 51A

NASA	Canaveral acronym
NASA	Rocket launcher
NASA	Space gr.
NASA	Hubble Telescope builder
NASA	Curiosity org.
NASA	Org. in the upcoming "Gravity"
NASA	Space org. launched during the Cold War
NASA	Mariner's org.

NASA	Space org.
NASA	Space shuttle grp.
NASA	Spirit's outfit
NASA	Shuttle org.
NASA	Skylab's sponsor
NASA	Space shuttle agcy.
NASA	Man-on-the-moon agcy.
NASA	Space agcy.

NASA	Columbia's org.
NASA	Org. with missions
NASA	Houston acronym
NASA	The Right Stuff org.
NASA	Launching org.
NASA	Apollo group
NASA	Apollo acronym
NASA	Apollo outfit

NASA	Out-of-this-world org.
NASA	Shuttle grp.
NASA	ESA's partner on the ISS
NASA	Grp. affiliated with the JPL
NASA	Org. that turns 50 on October 1, 2008