No. Several other countries have space agencies, such as the European Space Agency.
NASA They are the only ones to launch space shuttles seeing as how the space shuttle is NASA's vehicle
NASA is the only US governmental space agency. Private companies do exist but the aren't governmental.
only NASA has the password to space.
Your question needs clarification. NASA is not a "space station." It is the US government's space agency. The International Space Station is not in any country, it is orbiting around the Earth.
Of the five that were sent into space (the Space Shuttle Enterprise was used only for landing tests only), three were successful.
The space shuttle Enterprise never flew in space. It served as an atmosphere-only test vehicle for NASA in the late 1970s.
Atlantis, Endeavor, Discovery are the only Space Shuttles currently operating in NASA's Space Shuttle program (Challenger and Columbia were both lost in explosions).
NASA was created by Congress and and operates under a Federal Statute (law). A common misconception is that it is a large agency and its operations are performed by NASA employees. In fact, NASA is a relatively small organization, and the bulk of its centers and operations are performed by civilian Aerospace contractors. The debate on "privatizing" NASA is ridiculous, since private companies essentially run the space program anyway. NASA just administers it. The Space Program is only one of NASA's functions; by law, its mandate is to oversee the space program, as well as aeronautics and aerospace research.
The only robots that have been in space are called rovers. It costs NASA about 2.5 billion dollars to build them.
In the US, there are only 3 letters:NAS
Currently the only thing orbiting Mercury is MESSENGER, a space probe built by NASA.
The Space Shuttle Enterprise never flew in outer space. It's only flight was an unmanned glide test.