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BLOG #2 - WHAT'S DARK ENERGY ?

Scientists have given the name dark energy to the expansion-generating force or substance of the universe. Dark energy is the reverse of gravity; it pushes things apart rather than pulling them together. It is unknown whether the laws of physics or the general theory of relativity can account for the dark energy. 
               In 1998, astronomers studying supernovae found them rather than anticipated. This meant both they were farther away and the universe was expanding faster than expected.
               The U.S. Government's Joint Dark Energy Mission (JDEM) examined Type 1a supernovae, dying white dwarfs,because of their high and consistent luminosity. The program ended in 2010 and was replaced by the Wide- Field Infrared Survey Telescope (W-FIRST) which was launched on 17 Feb 2016.
W-FIRST Telescope
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