From Juan Carlos at IAC: “The Spiral Galaxy NGC 922”

Juan Carlos – IAC

In the spiral galaxy NGC 922 bright nebulas pink surrounding almost completely on the Galaxy can be seen. The image was taken by the Hubble Space Telescope.


NASA/ESA Hubble Telescope

Ringed and distorted structure resulting in the spiral shape of the Galaxy and the peculiar like a bulls-eye. The unusual current NGC 922 is the result of a cosmic collision with a Galaxy small makes 330 million years ago, which plunged through the heart of NGC 922 and was triggered by the other side. While the smaller Galaxy passes through the center of NGC 922, created gravitational waves that broke off the clouds of gas and sparked the formation of new stars whose radiation then ignited gas in the Galaxy.

The resulting bright pink of the nebulae is a characteristic sign of this process and is emitted by gas excited hydrogen, the dominant element in interstellar gas clouds. The image of NGC 922 of the Hubble telescope consists of a series of exposures taken in visible light with 3 wide field camera, and nearby widefield infrared light and Planetary Camera 2.


NASA/Hubble WFPC2. No longer in service.

NGC 922 is located at a distance of 157 million years light-years from Earth.