Thursday, April 22, 2010
Ride This Dark Universe
We all get that the earth revolves on its axis. It rotates around the sun. The stars appear to move, though the earth is moving faster. Some understand that the sun also moves. Some comprehend multiple moving galaxies. But when most people think of universe, they visualize a container in which everything moves. A cosmic milkshake, but one which has already been poured. What they don't see is the milkshake - glass and all - sliding across the counter. Alexander Kashlinsky, a scientist at NASA's Goddard Space Flight Center, studied more than 1,000 galaxy clusters to see how radiation from the Big Bang has scattered throughout the universe. What he found is shocking. The entire universe is moving... at a speed of one million miles per hour. This cause of this phenomenon, affectionately termed "the dark flow" has not yet been determined. Does another universe lurk nearby, or are we racing toward a seam in the fabric of space and time? This Earth Day, learn a little more about this container we ride in. But hold on tight. It's moving fast.