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Zooming In on the Andromeda Galaxy, also known as Gigapixels of Andromeda, is a 2015 composite photograph of the Andromeda Galaxy produced by the Hubble Space Telescope. It is 1.5 billion pixels in size, and is the largest image ever taken by the telescope. [1] At the time of its release to the public, the image was one of the largest ever ...
The Hubble Ultra-Deep Field (HUDF) is a deep-field image of a small region of space in the constellation Fornax, containing an estimated 10,000 galaxies.The original data for the image was collected by the Hubble Space Telescope from September 2003 to January 2004 and the first version of the image was released on March 9, 2004. [1]
NGC 4722 is a lenticular galaxy in the constellation of Corvus. Its velocity with respect to the cosmic microwave background is 1647 ± 25 km/s, which corresponds to a Hubble distance of 79.3 ± 5.7 Mly (24.3 ± 1.75 Mpc). [1] In addition, two non-redshift measurements give a distance of 89.2 ± 39.3 Mly (27.35 ± 12.05 Mpc). [2]
About 3,000 distinct galaxies could be identified in the images, [11] with both irregular and spiral galaxies clearly visible, although some galaxies in the field are only a few pixels across. In all, the HDF is thought to contain fewer than twenty galactic foreground stars; by far the majority of objects in the field are distant galaxies.
Size (left) and distance (right) of a few well-known galaxies put to scale. There are an estimated 100 billion galaxies in all of the observable universe. [1] On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).
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