I'm not certain. However, given that the intern would have access to NASA IT systems they would have to pass a background check which can take a long time for non-US citizens. The internship may be over by the time the background check cleared.
I would be extremely interested but I am European (Italy), basically non chance, right ?
It can't hurt to inquire. It may not be possible for this particular opening but perhaps you can set yourself up for future openings. If you get more information please post it back here afterwards. Thanks, and good luck.