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Spiral Galaxy Collisions Occur More Often - Windows to the Universe

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Spiral galaxy named NGC613
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Courtesy of Ohio State University

Spiral Galaxie Collisions Occur More Often
News story originally written on May 11, 1999

Scientists are finding strong evidence thatspiral galaxies collide more often than once thought. It was once believed that one third of all the spiral galaxies have had a collision. However, a new camera developed at Ohio State University sheds new light on the subject.

The camera takes pictures in infrared light like a regular camera takes pictures in visible light. This new technology allows scientists to look through dust in the center of the galaxies.

In the center of spiral galaxies lie bar-shaped bands or stars called barred spirals. It is believed that these barred spirals are caused by collisions. Using the infrared camera, scientists have discovered many more barred spirals in galaxies.

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