jimmyjammy Posted June 16, 2013 Share Posted June 16, 2013 there is a star say 60 light years from us. a day comes say when it expands into a monstrous red giant and we note it on earth. when do you expect the event to have occurred on a time scale on that star: (a)60 years earlier or (b)at the time we observed it on earth....if anyone feels it as (a) then let me know how we cannot even perceive it's size increase......ie., in the sky, it's size should increase so how can we not observe it?? Link to comment Share on other sites More sharing options...
Ophiolite Posted June 16, 2013 Share Posted June 16, 2013 It takes the light from the expanding star 60 years to reach us, so the answer is (a). Link to comment Share on other sites More sharing options...
Airbrush Posted June 18, 2013 Share Posted June 18, 2013 The scientific method includes observation and intuition. An educated guess, or hypothesis, is somewhat intuitive. The next step is to test the hypothesis. Link to comment Share on other sites More sharing options...
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