So this is the first discovery of an extraterrestrial species right, because that's pretty neat.
2. That's your own interpretation of the word. The actual definition of extraterrestrial life is life that did not originate on earth.
While I would not consider something that evolved on a space station around Earth as extraterrestrial, this seems a bit restrictive. This would rule out any life evolving from Earth material on Mars brought by a rover as extraterrestrial even million years later. Also, if we discovered life came from an asteroid, we might have to consider ourselves as extraterrestrial with such a definition.
(though I would not know how to define the word)