April 25, 2012 Science hardly ever advances in a straight line. Recent observations casting doubt on the existence of Dark Matter force us to consider the lessons of history.
April 21, 2012 A survey of the sky fails to find signs of Dark Matter, a totally unexpected result. If the observations stand up to scrutiny, our understanding of the universe could shift significantly.
March 20, 2012 It wasn't long ago that we thought expansion of the universe was slowing down. Whoops! Science then identified Dark Energy as a force acting against deceleration. The discovery upended cosmology almost overnight.
This image of the galaxy cluster Abell 520 — 2.4 billion light-years away — may challenge some of our basic theories about Dark Matter. It is overlaid with false-color maps showing concentrations of starlight (orange), hot gas (green) and mass (blue). The mass is mostly Dark Matter.
M.J. Jee and A. Mahdavi/NASA/ESA/CFHT/CXO
March 13, 2012 The things we can see in the universe are moving faster than they should be. Why? Is the answer Dark Matter, or a physics we're not yet aware of? Science has made its choice. Only time will tell if the consensus was correct.
March 6, 2012 Left to its own devices it seems the "dark universe" would never be able to make something as remarkable as life. Now that is something to ponder. Perhaps the dark universe makes us matter more than we ever realized.
October 5, 2011 This years Nobel Prize in physics celebrates what is the biggest mystery in physics today. What's causing the cosmic acceleration?
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