NGC 520

NGC 520 is the product of a collision between two disc galaxies that started 300 million years ago. It exemplifies the middle stages of the merging process: the discs of the parent galaxies have merged together, but the nuclei have not yet coalesced. It features an odd-looking tail of stars and a prominent dust lane that runs diagonally across the centre of the image and obscures the galaxy. NGC 520 is one of the brightest galaxy pairs on the sky, and can be observed with a small telescope toward the constellation of Pisces, the Fish, having the appearance of a comet. It is about 100 million light-years away and about 100,000 light-years across. The galaxy pair is included in Arp's catalogue of peculiar galaxies as ARP 157.

This image is part of a large collection of 59 images of merging galaxies taken by the Hubble Space Telescope and released on the occasion of its 18th anniversary on 24th April 2008.

Credit:

NASA, ESA, the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration and B. Whitmore (STScI)

About the Image

Id:heic0810aq
Type:Observation
Release date:24 April 2008, 15:00
Related releases:heic0810
Size:3271 x 1828 px

About the Object

Name:Arp 157, NGC 520, VV 231
Type:• Local Universe : Galaxy : Type : Interacting
• X - Galaxies Images/Videos
Distance:100 million light years

Colours & filters

BandWavelengthTelescope
Optical
B
435 nm Hubble Space Telescope
ACS
Optical
V
555 nm Hubble Space Telescope
ACS
Infrared
I
814 nm Hubble Space Telescope
ACS

Image Formats

Large JPEG
2.3 MB
Screensize JPEG
141.9 KB

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