100,000 Galaxies.  Each one contains Billions upon Billions of stars.  Each star could have planets, leading to countless possibilities of variation and the potential for life.  But would we see the signs of civilization from Earth?  Could a highly advanced civilization control the entire population of stars in their galaxy and harness that energy for their industry?  Would they alter their stellar environment enough that we could see them? This is exactly the line of questioning that led astronomers to look at over 100,000 different nearby galaxies in mid-infrared emission to see some potential signs of Alien life.  In these...