Hubble Digs Up Galactic Glow Worm

This charming and bright galaxy, known as IRAS 23436+5257,
was captured by the NASA/ESA Hubble Space Telescope. It is located in the
northern constellation of Cassiopeia, which is named after an arrogant, vain,
and yet beautiful mythical queen.

Hubble Digs Up Galactic Glow Worm

The twisted, wormlike structure of this galaxy is most likely the result of a
collision and subsequent merger of two galaxies. Such interactions are quite
common in the universe, and they can range from minor interactions involving a
satellite galaxy being caught by a spiral arm, to major galactic crashes.
Friction between the gas and dust during a collision can have a major effect on
the galaxies involved, morphing the shape of the original galaxies and creating
interesting new structures.

When you look up at the calm and quiet night sky it is not always easy to
picture it as a dynamic and vibrant environment with entire galaxies in motion,
spinning like children’s toys and crashing into whatever crosses their path.
The motions are, of course, extremely slow, and occur over millions or even
billions of years.

The aftermath of these galactic collisions helps scientists to understand how
these movements occur and what may be in store for our own Milky Way, which is
on a collision course with a neighboring galaxy, Messier 31

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