RT @PopSci: Jill Tarter has spent the past 38 years searching for signs of extraterrestrial life popsci.com/article/scienc… http://t.co/3mhfq1X1hF
RT @PopSci: Jill Tarter has spent the past 38 years searching for signs of extraterrestrial life popsci.com/article/scienc… http://t.co/3mhfq1X1hF