Terrestrial Planet Finder
solarlux writes "The Terrestrial Planet Finder has taken one step closer to reality as two architectures have been approved by NASA. The first, TPF-c, will be a single optical telescope which employs a coronograph to block starlight for planet detection. TPF-i will be a flotilla of infrared telescopes flying in formation to form a interferometer. TPF-i will analyze the planets identified by TPF-c for life signatures. The telescopes are to be launched within the next 10-15 years."
aliens axist. but we haven't seen them yet. we probably won't see them in our lifetimes, not a great chance on that.
but probabilistic maths say is 99.9% possible that they exist.