Oh, and NASA's involved too...
A panel of scientists convened by America's leading scientific advisory group says the hunt for extraterrestrial life should be greatly expanded to include what they call "weird life": organisms that lack DNA or other molecules found in life as we know it.
NASA has long looked to life on Earth to guide its search for life on other worlds. Planets and moons that have hints of liquid water have been ranked high on the list of potential sites for life-detection missions. But there is good reason to suspect that other kinds of chemistry could support life as well, the authors of the new report argue. Weird life could differ from life as we know it in small or big ways.