Dwarf star 200 light years away contains life's building blocks by Staff Writers Los Angeles CA (SPX) Feb 10, 2017
Rendering of part of a planetary system in orbit around a white dwarf star (the white spot at the center of the red ring). The foreground shows rocky asteroids; the red ring represents the rocky debris that remains of former asteroids or a minor planet that have already been broken apart by the strong gravity of the white dwarf. Image courtesy University of Warwick.
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Santa Fe Institute researchers look for life's lower limits Santa Fe NM (SPX) Feb 07, 2017
When energy and nutrients abound, a bacterium will repair itself while synthesizing new parts to create a twin and then split, all as quickly as conditions allow. But if resources shrink, so does growth rate. The cell responds by shunting its dwindling supplies from replication to repair, shutting down processes until it's running a skeleton crew to survive. Below a crucial level, it's all over. ... read more
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