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M81 by nasa.gov: This lovely spiral galaxy's arms curl all the way down into its center. It is one of the brightest galaxies that can be seem from earth and is located 12 million light-years away in the Ursa Major constellation.

Cartwheel Galaxy, ESO 350-40, is a lenticular galaxy about 500 mly away in the constellation Sculptor. It is an estimated 150,000 light-years across. The galaxy was once a normal spiral galaxy like the Milky Way before it apparently underwent a head-on collision with a smaller companion approximately 200 mya.

National Geographicfrom National Geographic

Black Holes Photos

Black Hole Wind. A composite x-ray/optical image of the active NGC 1068 galaxy reveals an enormous plume of hot gas emanating from the supermassive black hole at the galaxy's center. Scientists think the shape and speed of the plume, which moves at about 1 million miles an hour, are caused by the funneling effect of a doughnut-shaped ring of cooler gas and dust that surrounds the black hole.

Using ESO's Very Large Telescope, an international team of astronomers has discovered a stunning rare case of a triple merger of galaxies. This system, which astronomers have dubbed 'The Bird' - although it also bears resemblance with a cosmic Tinker Bell - is composed of two massive spiral galaxies and a third irregular galaxy.

NASA's Spitzer Space Telescope has imaged this coiled galaxy with an eye-like object at its center. The 'eye' at the center of the galaxy is actually a monstrous black hole surrounded by a ring of stars.

io9from io9

Hubble has spotted an ancient galaxy that shouldn't exist

This galaxy is so large, so fully-formed, astronomers say it shouldn't exist at all. It's called a "grand-design" spiral galaxy, and unlike most galaxies of its kind, this one is old. Like, really, really old. According to a new study conducted by researchers using NASA's Hubble Telescope, it dates back roughly 10.7-billion years — and that makes it the most ancient spiral galaxy we've ever discovered.

National Geographicfrom National Geographic

Galaxy Photos, Galaxies Pictures, Images

"A Hubble Space Telescope image shows unprecedented detail of the Antennae galaxies, an intense star-forming region created when two galaxies began to collide some 200 million to 300 million years ago. The bright, blue-white areas show newly formed stars surrounded by clouds of hydrogen, which are colored pink. A similar collision is expected between our galaxy, the Milky Way, and the nearby Andromeda galaxy in several billion years." via National Geographic

A GALEX ultraviolet image of the interacting galaxies M81 and M82, which lie 12 million light-years away in the constellation Ursa Major. The gravity from each galaxy dramatically affected the other during their last close encounter, 200 million years ago. Gas density waves rippling around M81 make it a grand design spiral. M82 is undergoing a starburst at its core, creating glowing fingers of hydrogen.

Hoag's Object by NASA: This non-typical galaxy is known as a ring galaxy, and was discovered in 1950 by astronomer Art Hoag, who initially thought it to be a planetary nebula. Serendipitously, from the perspective of our solar system what appears to be an even more distant ring galaxy is plainly visible within the gap between this galaxy's central body of mostly yellow stars and the outer ring of blue stars. via wikipedia. #Ring_Galaxy #Hogs_Object #Astronomy

NGC 1566 a beautiful galaxy located approximately 40 million light-years away in the constellation of Dorado

The Sombrero Galaxy (also known as M104 or NGC 4594) is an unbarred spiral galaxy in the constellation Virgo located 28 million light years from Earth. It has a bright nucleus, an unusually large central bulge, and a prominent dust lane in its inclined disk. The dark dust lane and the bulge give this galaxy the appearance of a sombrero.

PBSfrom PBS

When Galaxies Collide

WHEN GALAXIES COLLIDE The Whirlpool Galaxy, the red spiral, and its companion galaxy, NG 5195 are 23 million light-years from Earth - that's relatively close. IRAC shows the warm dust in red, a sign of active star formation probably triggered by a collision between the two galaxies.

A new image of two tangled galaxies has been released by NASA's Great Observatories. The Antennae galaxies, located about 62 million light-years from Earth, are shown in this composite image from the Chandra X-ray Observatory (blue), the Hubble Space Telescope (gold and brown), and the Spitzer Space Telescope (red).

Located 500 million light-years away in the constellation Sculptor, the galaxy looks like a wagon wheel. The galaxy's nucleus is the bright object in the center of the image; the spoke-like structures are wisps of material connecting the nucleus to the outer ring of young stars. The galaxy's unusual configuration was created by a nearly head-on collision with a smaller galaxy about 200 million years ago.

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NASAfrom NASA

NGC 6946: The 'Fireworks Galaxy'

NGC 6946, the Fireworks Galaxy