NEWPORT, Mich., May 5, 2012 /PRNewswire/ -- The Fermi 2 Nuclear Power Plant returned to service today when operators synchronized the plant to DTE Energy's electrical system, following a safe,

There's more to the cosmos than meets the eye. About 80 percent of the matter in the universe is invisible to telescopes, yet its gravitational influence is manifest in the orbital speeds of stars around galaxies and in the motions of clusters of galaxies.

The human eye is crucial to astronomy. Without the ability to see, the luminous universe of stars, planets and galaxies would be closed to us, unknown forever. Nevertheless, astronomers cannot shake their fascination with the invisible.

After more than three years in space, NASA's Fermi Gamma-ray Space Telescope is extending its view of the high-energy sky into a largely unexplored electromagnetic range.

WASHINGTON, Jan.