The most common stars in the Milky Way may be even less friendly to life ... stellar bodies smaller and less massive than the sun, may blast their planets with intense ultraviolet (UV) light ...
Using in part the Gemini North telescope, one half of the International Gemini Observatory, partly funded by the U.S.
The Milky Way could be teeming with interstellar alien ... enough for their star to get close to another star with a habitable planet. "If long enough is a billion years, well then that's one ...