Arp 148

arp 148Mayall’s Object is classified in the Atlas of Peculiar Galaxies as Arp 148. It is believed to be the result of two colliding galaxies located 500 million light years away within the constellation of Ursa Major. Astronomers believe that a pair of galaxies collided, resulting in a new object consisting of a ring-shaped galaxy with a tail emerging from it. It is thought that the original collision created a shockwave that initially drew matter into the center which then formed the ring.

Image Credit: NASA

Arp 188

Tadpole Arp 188The Tadpole Galaxy is a disrupted barred spiral galaxy 420 million light-years from Earth in the constellation Draco. Its most dramatic features is a trail of stars about 280,000 light-years long and massive, bright blue star clusters. Like a tadpole here on Earth, the galaxy will likely lose its tail as it grows older—the tail’s stars will probably form smaller satellite galaxies of the larger spiral.

Image Credit: NASA


Neptune-This picture of Neptune was produced from the last whole planet images taken through the green and orange filters on the Voyager 2 narrow angle camera. The images were taken on 25 years ago at a range of about 7 million km, 4 days and 20 hours before closest approach on 25 August, 1989. The picture shows the Great Dark Spot and its companion bright smudge. The fast moving bright feature called “Scooter” and the little dark spot are visible near the western limb. These clouds were seen to persist for as long as Voyager‘s cameras could resolve them. A bright cloud band similar to the south polar streak may be seen to the north.

Image Credit: NASA

UPDATE—The New Horizons spacecraft crossed the orbit of Neptune today on its way to Pluto. Neptune was not nearby. In July, New Horizons took this picture of Neptune from almost 4 billion km away.neptune-triton-7-10-14-new_hoizonsImage Credit: NASA