File:Merging galaxy NGC 7252 From the Ground (left) and From Hubble (right) (1993-11-100).jpg

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Captions

Captions

[Left] Ground-based Telescopic Photograph NGC 7252 has been considered the prototypical example of a merger between two disk-shaped galaxies.

Summary[edit]

Description
English: [Left] Ground-based Telescopic Photograph NGC 7252 has been considered the prototypical example of a merger between two disk-shaped galaxies. The galaxy has a pair of long tails that are unambiguous evidence of the effects of gravitational tidal forces from a galaxy merger. The galaxy is nicknamed the "Atoms-for-Peace" galaxy because its stars form a bizarre loop-like structure that resembles a schematic diagram of electrons orbiting an atomic nucleus. (In December 1953, U.S. President Dwight 0. Eisenhower made his "Atoms for Peace" speech to foster peaceful applications of nuclear energy.) The galaxy is located 300 million light-years away in the constellation Aquarius.
Date 25 May 1993 (upload date)
Source Merging galaxy NGC 7252 From the Ground (left) and From Hubble (right)
Author

Left image: Dr. Francois Schweizer, taken with 4-meter telescope at the Cerro Tololo Inter-American Observatory.; Right Image: B. Whitmore (STScI), and NASA;

Co-investigators: Francois Schweizer of the Carnegie Institution of Washington, Washington, D.C., and Claus Leitherer, Kirk Borne, and Carmelle Robert of STScI.
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Licensing[edit]

Public domain This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

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