Showing posts with label Planetary Science Congress. Show all posts
Showing posts with label Planetary Science Congress. Show all posts

Thursday, November 14, 2013

Alien Life May Thrive in Impact Craters


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http://www.theufochronicles.com/2013/11/alien-life-may-thrive-in-impact-craters.html

By Amanda Doyle
Astrobiology Magazine
11-13-13

      An asteroid or comet smashing into the surface of a planet can spell doom for living creatures, but if the impact isn't large enough to completely decimate a planet's inhabitants, then the crater can ultimately provide a habitat for life. That's the finding of a new study reported at the European Planetary Science Congress in September by Iain Gilmour of the Open University in the United Kingdom.

If an ice- or water-rich area is the victim of an impact, the combination of heat and groundwater will create what is known as a hydrothermal system. In addition, many complex organic compounds, which could be precursor molecules for life, are created at high temperatures such as those generated by a collision. This combination could create the ingredients needed for life as we know it, making impact-induced habitats a potential candidate for the birthplace of life on Earth.

For a habitat within a crater to remain "home sweet home," there must be a constant supply of water and nutrients. The lifetime of the hydrothermal system is also crucial, as the heat from the impact will eventually fade away into its surroundings. . . .