NASA

National Aeronautics and Space Administration - the successor of the earlier National Advisory Committee for Aeronautics. Begun in 1958, largely in order to gain a moral victory in the Cold War by beating the USSR to the moon, their main purpose is to gain knowledge about outer space and neighboring celestial objects in order to increase humanity's knowledge of the cosmos. Initially well-funded and manned by some of the greatest scientists of the 20th century, the Administration's space programs helped to develop some of the most influential and often-used technology of the modern day (satellite technology, computers, electronic miniaturization, temperature resistant materials, etc.). Unfortunately, due to the multitude of early successes and prevailing opinion in Washington, NASA is often expected to do more with less money, as Congress often slashes budgets and expects better service. Not wanting to lose the tradition of innovation, NASA has recently tried to appease the government and an ever-increasing public ignorance of the benefits of scientific exploration, and as a result has tried to do more than they should, resulting in the 1986 Challenger explosion, and the heat shield failure of the Columbia in 2003, along with less deadly failures of Mars probes.

The National Aeronautics and Space Administration. NASA is a once great administration that has produced some of the best known names in the avation and aeronautics industries, such as Neil Armstrong, Jim Lovell, and Gene Kranz. They are also associated with the expressions "Houston, we'vd had a problem" (Jack Swigert, April 13, 1970) and the infamous "Houston, we have a problem" (Jim Lovell, said on same date. All he really did was put Swigert's quote in present tense). Now NASA is a third rate agency that nobody in government cares about.

a girl who turns prude after years of craving the cock

N.A.S.A = Not A Slut Anymore

In the 60s it was just a group of scientists former Nazis charged with war crimes trying to get to to the moon now they are trying to get to mars

Never A Straight Answer

Never a straight answer.

NASA - representing "Nice And Safe Attitude"
Used as a salutation, or farewell –an interjection
Popularised by a clothing brand worn by some in the late 1990's UK rave scene.
At first glance, the garment would appear to be an official National Aeronautics and Space Administration or NASA product, as the logo used the worm font used by NASA. However beneath the main NASA text body, it would state "Nice And Safe Attitude".
Interestingly many of those that wore this product line did not have a nice and safe attitude at all. They were in fact drug addled party kids that had taken too many class A drugs, and as a result had become paranoid, violent or simply talked a load of bollocks at such a high speed they spat in your face as they attempted to purge their body of words.
As a result the greeting is used in a rather tongue in cheek fashion today.