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Daily Archives: March 26, 2013

 
26
Mar 2013

Exploding stars and DNA

POSTED BY: DIMITRA ATRI
 
Our Galaxy is filled with high-energy subatomic particles generated by exploding stars or supernovae, also known as cosmic rays. These particles strike the Earth’s atmosphere and produce more (secondary) particles, which damages the ozone layer and causes DNA damage to terrestrial and marine life. In Carl Sagan’s words: ” The evolution of life is driven in parts through mutations by the deaths of distant stars. We are, in a very deep sense tied to the cosmos.” Life has evolved over the past ~ 3 billion years....
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