A new composite of NGC 4258 features X-rays from Chandra (blue), radio waves from the VLA (purple), optical data from Hubble (yellow and blue), and infrared with Spitzer (red). NGC 4258 is well known to astronomers for having "anomalous" arms that are not aligned with the plane of the galaxy, but rather intersect with it. Researchers are trying to understand how the giant black hole in the center of NGC 4258 is affecting the rest of the galaxy. NGC 4258, also known as Messier 106, is located about 23 million light years from Earth. Credit X-ray: NASA/CXC/Caltech/P.Ogle et al; Optical: NASA/STScI & R.Gendler; IR: NASA/JPL-Caltech; Radio: NSF/NRAO/VLA
Different images and publications of the interaction between two galaxies. The Antennae Galaxies.