20th CENTURY SCIENCE
'(<a href="http://www.j-archive.com/media/2008-01-31_DJ_02.jpg" target="_blank">I'm astrophysicist Neil deGrasse Tyson.</a>)  We were just getting used to dark matter being 90% of the universe when in 1998 we were hit with this discovery, which is making the universe expand much faster than anyone had expected'
dark energy