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    Astronomy Photo of the Day - The Tidal Tail of NGC 3628. Really gives things perspective.

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    In August of 2007, astronomers located a gigantic hole in the universe. This empty space, stretching nearly a billion light-years across, is devoid of any matter such as galaxies, stars, and gas, and neither does it contain the strange and mysterious dark matter, which can be detected but not seen. The large void in the Constellation Eridanus appears to be improbable given current cosmological models. A radical and controversial theory proposes that it is a "universe-in-mass black hole"

    Seyfert's Sextext - About 190 million light-years away in the head portion of the constellation Serpens (the Snake) are 4 interacting galaxies, the densest known galaxy group, are packed in an area 100,000 light-years across (like our Milky Way's size). The small face-on spiral galaxy (near image center) is more distant in a chance alignment and the wispy cloud (upper left) is possibly a tidal tail of stars - Image processing : © Judy Schmidt

    SHubble Extreme Deep Field #buondì #twitter

    Quasar- this is a black hole that is the brightest object in the universe and is thousands of times brighter than the stars in a galaxy combined! Light is shot out of either end in extremely long distances. The light we see coming from these today is very old meaning there are no quasars recently. They are all from far away but a new one can appear at any moment

    The Hydra Cluster of Galaxies Image (credit & copyright: Angus Lau)

    NGC 7331

    The Hercules Cluster of Galaxies Image Credit & Copyright: Ken Crawford

    Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretch 4 billion light-years from end to end. The structure is a light quasar group (LQG), a collection of extremely luminous Galactic Nulcei powered by supermassive central black holes!

    A Rose Made of Galaxies seen from the Hubble telescope

    M106: A Spiral Galaxy with a Strange Center

    Spiral Galaxy NGC 5033

    Large Magellanic Cloud via Hubble

    NGC 7714 ~ This unusual structure is a river of Sun-like stars that has been pulled deep into space by the gravitational tug of a by a passing galaxy, not seen in this Hubble Space Telescope photo. That's because the near-collision between the galaxies happened at least 100 million years ago.

    The Porpoise Galaxy from Hubble

    21st Century M101

    Our beautiful galaxy.

    Spiral galaxy NGC 2613

    Spectacular 'Edge-On' Galaxy ESO 243-49 Lenticular

    Located about 130 million light-years away, NGC 4650A is one of only 100 known polar-ring galaxies. - Credit: The Hubble Heritage Team (AURA/STScI/NASA/ESA)

    See Explanation. Clicking on the picture will download the highest resolution version available.