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[NASA] Hubble Takes a Look at Tangled Galaxies

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Hubble Space Telescope
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Hubble Takes a Look at Tangled Galaxies

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This Hubble image features a pair of interacting spiral galaxies called MCG+05-31-045.
ESA/Hubble & NASA, R. J. Foley (UC Santa Cruz)

This NASA/ESA

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image depicts the cosmic tangle that is MCG+05-31-045, a pair of interacting galaxies located 390 million light-years away and a part of the Coma galaxy cluster.

The Coma Cluster is a particularly rich cluster that contains over a thousand known galaxies. ******** astronomers can easily spot several of these in a backyard telescope (

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). Most of them are elliptical galaxies, and that’s typical of a dense galaxy cluster like the Coma Cluster: many elliptical galaxies form through close encounters between galaxies that stir them up, or even collisions that rip them apart. While the stars in interacting galaxies can stay together, their gas is twisted and compressed by gravitational forces and rapidly used up to form new stars. When the hot, massive, blue stars ****, there is little gas left to form new generations of young stars to replace them. As spiral galaxies interact, gravity disrupts the regular orbits that produce their striking spiral arms. Whether through mergers or simple near misses, the result is a galaxy almost devoid of gas, with aging stars orbiting in uncoordinated circles: an elliptical galaxy.

It’s very likely that a similar fate will befall MCG+05-31-045. As the smaller spiral galaxy is torn up and integrated into the larger galaxy, many new stars will form, and the hot, blue ones will quickly ***** out, leaving cooler, redder stars behind in an elliptical galaxy, much like others in the Coma Cluster. But this process won’t be complete for many millions of years.

Explore more Coma Cluster images from Hubble.

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Media Contact:

Claire Andreoli
NASA’s 

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, Greenbelt, MD
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Last Updated
Nov 14, 2024
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Andrea Gianopoulos
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