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English: When we look into the distant cosmos, the great majority of the objects we see are galaxies: immense gatherings of stars, planets, gas, dust, and dark matter, showing up in all kind of shapes. This Hubble picture registers several, but the galaxy catalogued as 2MASX J05210136-2521450 stands out at a glance due to its interesting shape.

This object is an ultraluminous infrared galaxy which emits a tremendous amount of light at infrared wavelengths. Scientists connect this to intense star formation activity, triggered by a collision between two interacting galaxies.

The merging process has left its signs: 2MASX J05210136-2521450 presents a single, bright nucleus and a spectacular outer structure that consists of a one-sided extension of the inner arms, with a tidal tail heading in the opposite direction, formed from material ripped out from the merging galaxies by gravitational forces.

The image is a combination of exposures taken by Hubble’s Advanced Camera for Surveys, using near-infrared and visible light. A version of this image was submitted to the Hubble’s Hidden Treasures image processing competition by contestant Luca Limatola.
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출처 http://www.spacetelescope.org/images/potw1318a/
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ESA/Hubble & NASA

Acknowledgement: Luca Limatola

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w:ko:크리에이티브 커먼즈
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현재2013년 5월 6일 (월) 09:552013년 5월 6일 (월) 09:55 판의 섬네일1,998 × 1,998 (1.96 MB)Jmencisom (토론 | 기여)User created page with UploadWizard

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