A question about current human crewed orbital vehicles an stations.

Ok, this is sort of vague.


I was messing around with a NASA program I have downloaded that shows all the satelites that orbit the planet (they're shown as small white pixels), and I was looking through the list they have, and I looked at "Human Crewed", and there are two things listed, first the ISS and than something that it calls "GP-B".

Now I'm not insinuating it's anything sinister or anything, I'm just curious what it is, since I thought the only thing currently in orbit that was human creweds was the ISS.


Oh, and the program is acting in real time, so it moves the satelites around.

Gravity Probe B is not human crewed. Must be a mistake.

Hm, figured it might be something like that.


Thanks Sardion.

Yes, GP-B stands for Gravity Probe B and as sardion said, it is not manned. Here is a link to what its all about:
HERE
It is an experiment set up to measure Einstein's general theory of relativity. Interesting stuff