The phrase can mean different things in different contexts. In the context I'm guessing you mean it is another country's space agency. NASA is the US space agency. ESA is the European Space Agency, JSA the Japanese space agency, etc. ESA and JSA would be NASA counterparts.
NASA is an example of an what type of agency?
it is out in space and in the space agency building
The European Space Agency has Ireland as a member.
Italian Space Agency was created in 1988.
Austrian Space Agency was created in 1972.
Romanian Space Agency was created in 1991.
Brazilian Space Agency was created in 1994.
Bulgarian Space Agency was created in 1990.
European Space Agency was created in 1975.
Algerian Space Agency was created in 2002.
Israel Space Agency was created in 1983.