M. Blanton and SDSSIII. Zoom-in to a piece of the Milky Way
night sky. Since the 1920s, scientists have known that the
galaxies—long thought fixed and unmoving—were actually receding
deeper into the cosmos. In fact, we now know from observations
of Type 1a supernovae that distant objects are speeding faster
and faster away from us as the universe expands. That's because,
not only is the universe expanding, it's expanding at an
increasing rate. Scientists at Fermi National Accelerator
Laboratory (Fermilab), Brookhaven National laboratory (BNL),
SLAC National Accelerator Laboratory, and Lawrence Berkeley
National Laboratory (Berkeley Lab) are eager to find out why.
Recent observations by SLAC scientists and the Sloan Digital Sky
Survey may provide an answer. Andrey Kravtsov, The University of
Chicago, and Anatoly Klypin, New Mexico State University A
history of the universe's expansion To date, scientists have
offered two explanations for the accelerating expansion of the
universe. Either some type of mysteriou