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The AstronomersMeasuring the Expanding Universe - An Interview with Saul Perlmutter
Measuring the Expanding Universe - An Interview with Saul Perlmutter
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This is the science portion of an interview with Saul Perlmutter, 2011 Nobel Prize Winner, by Chancellor Robert Birgeneau during Berkeley CalDay, April 21, 2012. Perlmutter and his team found that instead of a static non-expanding universe or of a contracting or uniformly expanding universe the universe is actually expanding at an increasing rate with the rate doubling over a few billion years.This finding has resulted in the concept of "dark energy" and, based on their data, now thought to comprise about 73% of the universe. In other words physicists have no idea what nearly 3/4ths of the universe is made of! This drives them bonkers (not his words), but also very excited with this new mystery. He describes how important team work is in doing difficult ground breaking research like this. He tells why the easy accessibility of a wide variety of experts and the non-hierarchical atmosphere of Berkeley is so conducive to this type of highly creative work. He describes that, in contrast to common belief where scientists try to prove they are right, they actually spend most of their time trying to see where they could be wrong, particularly when their findings are so unexpected, and why this kind of thinking is so important in approaching the complicated long range problems facing society today.
Added on Nov 27, 2012 by lonewolf
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Time: 30:12 | Views: 249 | Comments: 0
   
  Extragalactic astronomy  
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