November 9, 2010
"NASA’s Fermi Gamma-ray Space Telescope has unveiled a previously unseen structure centered in the Milky Way. The feature spans 50,000 light-years and may be the remnant of an eruption from a supersized black hole at the center of our galaxy."

Quote from online NASA article "NASA’s Fermi Telescope Finds Giant Structure in our Galaxy"

Nasa Fermi Gamma-Ray Telescope