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New Study Outlines 'Water World' Theory of Life's Origins - Astrobiology Magazine This image from the floor of the Atlantic Ocean shows a collection of limestone towers known as the "Lost City." Alkaline hydrothermal vents of this type are suggested to be the birthplace of the first living organisms on the ancient Earth. Image courtesy D. Kelley and M. Elend/University of Washington

Grand tree of life study shows a clock-like trend in new species emergence, diversity - http://scienceblog.com/77278/grand-tree-of-life-study-shows-a-clock-like-trend-in-new-species-emergence-diversity/

Search for advanced civilizations beyond Earth finds nothing obvious in 100,000 galaxies - http://scienceblog.com/77803/search-for-advanced-civilizations-beyond-earth-finds-nothing-obvious-in-100000-galaxies/

'Emotional contagion' sweeps Facebook - http://scienceblog.com/72814/emotional-contagion-sweeps-facebook/

Some astronauts at risk for cognitive impairment, animal studies suggest - http://scienceblog.com/71934/some-astronauts-at-risk-for-cognitive-impairment-animal-studies-suggest/

Long-Term Warming Likely to Be Significant Despite Recent Slowdown - http://scienceblog.com/70977/long-term-warming-likely-to-be-significant-despite-recent-slowdown/

The Heart Nebula, IC 1805, Sh2-190, lies some 7500 light years away from Earth and is located in the Perseus arm of the Galaxy in the constellation Cassiopeia.

ピンもと:Live Science

7 Theories on the Origin of Life

Panspermia Perhaps life did not begin on Earth at all, but was brought here from elsewhere in space, a notion known as panspermia. For instance, rocks regularly get blasted off Mars by cosmic impacts, and a number of Martian meteorites have been found on Earth that some researchers have controversially suggested brought microbes over here, potentially making us all Martians originally. Other scientists have even suggested that life might have hitchhiked on comets from other star systems…