New picture of the Leo Triplet Galaxies showing the Tidal Tail of NGC 3628 - these galaxies can be introduced individually as NGC 3628 (left), M66 (bottom right), and M65 (top right). (credit & copyright: Thomas V. Davis (tvdavisastropix.com))
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
A sublime image of the Carina Nebula taken by the VLT (Very Large Telescope) of ESO in the infrared. The nebula is 7500 light years from us in the direction of the constellation Carina in the southern hemisphere. It is a nebula of gas and dust where new stars form, especially type O blue massive stars and A. It contains the famous star Eta Carinae hypergiant which is a hundred times more massive than the sun.
NGC 4565: Galaxy on Edge Image Credit & Copyright: Ken Crawford (Rancho Del Sol Obs.) Magnificent spiral galaxy NGC 4565 is viewed edge-on from planet Earth. Also known as the Needle Galaxy for its narrow profile, bright NGC 4565 is a stop on many telescopic tours of the northern sky... NGC 4565 itself lies about 40 million light-years distant and spans some 100,000 light-years.
The Glowing Eye of NGC 6751 - Hubble spied a giant celestial "eye" glowing in the constellation Aquila. The nebula is a cloud of gas ejected several thousand yrs ago from the hot star visible in its center. Planetary nebulae are shells of gas thrown off by Sun-like stars nearing the ends of their lives. The star's loss of its outer gaseous layers exposes the hot stellar core, whose strong ultraviolet radiation then causes the ejected gas to fluoresce as the planetary nebula.
NGC 4258 is a spiral galaxy well known to astronomers for having two so-called anomalous arms that glow in X-ray, optical, and radio light. Rather than being aligned with the plane of the galaxy, they intersect with it. This composite image of NGC 4258 shows the galaxy in X-rays from Chandra (blue), radio waves from the VLA (purple), optical data from Hubble (yellow and blue), and infrared with Spitzer (red).