The new Wide Field Camera 3 aboard the NASA/ESA Hubble Space Telescope has taken the deepest image yet of the Universe in near-infrared light. The faintest and reddest objects in the image are likely the oldest galaxies ever identified, having formed between only 600-900 million years after the Big Bang. – ESA
ScienceShot : Odd Galaxy Raises Many Questions: here.
Astronomers using the South Pole Telescope External Non-U.S. government site report that they have discovered the most massive galaxy cluster yet, tipping the scales at the equivalent of 800 trillion suns, and holding hundreds of galaxies: here.
Spiral galaxies stripped bare: Six spectacular spiral galaxies are seen in a clear new light: here.
A giant structure around our Milky Way galaxy has been discovered by the NASA Fermi Gamma-ray Space Telescope. Gamma ray emitting bubbles are symmetrically attached at either side of the plane of the Milky Way and are 50,000 light years, or half the Milky Way’s diameter across (one light year is the distance travelled by light in one year, or about 6 trillion miles). Gamma rays, like radio, microwaves, light and X-rays, are electromagnetic radiation travelling at the speed of light but with a much higher energy or shorter wavelength: here.
Hubble Spies Aftermath of Galactic Cannibalism: here.