http://cache.io9.com/assets/base/img/thumbs140x140/io9.com.png http://io9.com/tag/exogenesis http://io9.com/tag/exogenesis

Many of you have probably heard about asteroid 2005 YU55, the massive rocky body that tomorrow night will collide with Earth in a ball of flames pass the planet safely, albeit closer than any asteroid in the last 35 years. More »
]]> http://io9.com/index.php?op=postcommentfeed&postId=5856820&view=rss&microfeed=true

Score another point for exogenesis, the idea that life on Earth has extraterrestrial origins. For the first time, NASA has identified amino acids in a sample of material from a comet, suggesting a comet may have brought proteins to Earth. More »
]]> http://io9.com/index.php?op=postcommentfeed&postId=5340142&view=rss&microfeed=true

Critics of exogenesis note that the proper conditions to maintain life are rare in the universe, and would not likely survive the trip inside Earth's atmosphere. But new data on comets offers evidence that our ancestors were, indeed, extraterrestrial. More »
]]> http://io9.com/index.php?op=postcommentfeed&postId=5326776&view=rss&microfeed=true

Planet Earth might be home sweet home, but is it really humanity's birthplace? We explore science fiction stories where humans come from everywhere but Earth, be it by colonization, alien experiments, or good old-fashioned panspermia. More »
]]> http://io9.com/index.php?op=postcommentfeed&postId=5143698&view=rss&microfeed=true

We usually think of asteroid impacts as harbingers of mass extinction, but they might be the reason life exists on our planet at all. It's possible for bacteria to hitch rides on rocks ejected by space impacts and move from planet to planet. We know that certain Earth bacteria are capable of surviving the hostile conditions of space, but could they survive the impacts themselves? A group of scientists put them to the test, and we've got the results for you. More »
]]> http://io9.com/index.php?op=postcommentfeed&postId=5036833&view=rss&microfeed=true