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How Big Would an 'Alien Megastructure' Have to Be?
November 08, 2017 | ArticleAny aliens building around Tabby's star would have to be thinking very big.
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'Making Contact' Profiles Pioneering Alien Hunter Jill Tarter
November 06, 2017 | ArticleJill Tarter helped propel the hunt for extraterrestrial intelligence. Her biographer talks about how she became the driving force in the field.
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What Darwin Can Tell Us About Aliens
November 02, 2017 | ArticleAliens may have something in common with life on Earth.
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Are Plate Tectonics Key To Life? Maybe Not
October 30, 2017 | ArticleEarth's early crust may have been sluggish when life formed.
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Where Are All the Intelligent Aliens? Maybe They're Trapped in Buried Oceans
October 26, 2017 | ArticleMaybe intelligent life is widespread throughout the galaxy, but most of it lives in deep, dark subsurface oceans that are cut off from the rest of the cosmos.
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How Would We Talk to Aliens?
October 12, 2017 | ArticleThe search for extraterrestrials has gone on long before the SETI Institute was founded in 1984.
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Life on Earth May Have Started with a Cosmic Splash
October 04, 2017 | ArticleCould the building blocks for life on Earth have been delivered by meteorites crashing into ponds of water 4 billion years ago?
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Water Can Be Corrosive To Life, So What About Alternative Solvents?
October 03, 2017 | ArticleChemicals that eventually formed the very first organisms on Earth may have relied on a liquid solvent other than water.
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No Life Needed: Organic Compound Forms at Comet and Baby Star System
October 02, 2017 | ArticleOrganic molecules once thought to be produced only by life-forms have been found in two separate regions of space.
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Ancient Lake On Mars Was Hospitable Enough To Support Life
September 26, 2017 | ArticleMars' Gale Crater, once home to a flowing river and a lake, had the right conditions for life in ancient times, according to a new study looking at three years of data from NASA's Curiosity rover.
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