Aliens May Be Too Distant for Contact

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Aliens May Be Too Distant for Contact         The Milky Way may be home to some 3,000 extraterrestrial civilizations but vast distances will make contact extremely rare. Read More WATCH VIDEO: How Are We Looking For Alien Life? Find out how scientists are trying to detect signs of life on other worlds. Marble Door Revealed in Greek Tomb         The impressive door is made from marble brought down from the island of Thasso and bolsters the theory that the site is a grand tomb. Read More WATCH VIDEO: Ancient Lost Army Found? Has the lost army of Persian King Cambyses II been discovered? New Crystal Could Let Divers Breathe Underwater         A new material synthesized by researchers could gather oxygen from the water around you. Read More WATCH VIDEO: Divers Plumb Depths for U-Boats Off the coast of North Carolina, marine archaeologists are surveying three sunken German U-Boats.  How Fast Are We All Hurtling Through the Universe?         There's nothing in the universe that isn't moving -- even us. Watch Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2014 Discovery Communications, LLC