>From end to end, the newly discovered gamma-ray bubbles extend 50,000 light-years, or roughly half of the Milky Way’s diameter, as shown in this illustration. Credit: NASA
>From a NASA press release:
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.
“What we see are two gamma-ray-emitting bubbles that extend 25,000 light-years north and south of the galactic center,” said Doug Finkbeiner, an astronomer at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., who first recognized the feature. “We don’t fully understand their nature or origin.” (…) Read the rest of Fermi Telescope Finds Giant Structure in the Milky Way (577 words)
* * *
(C) nancy for Universe Today, 2010. | Permalink | 2 comments | Add to del.icio.us Post
Feed enhanced by Better Feed from Ozh