Dark energy: Einstein was wrong, and right
European astronomers have documented the movement of galaxies in a new way.
Scientists studying data from the European Southern Observatory's Very Large Telescope in Chile were able to reproduce their observations of galaxies' movements going back 7 billion light-years. This is pretty impressive by itself, but they say it also reveals the truth of Einstein's "cosmological constant"--the activity of "dark energy"--which he introduced, then later disavowed.
Read the full story on MSNBC: "Nailing down dark energy"