Death plunge of galaxies and the longest known tail revealed by NASA
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Change is a constant and that happens on the tiny scale of a human being to those of the biggest galaxies in the world. Now, NASA has detected a group of galaxies plunging into the Coma galaxy cluster, but the significant part is that it is leaving behind the longest known tail of superheated gas behind a galaxy group ever found.NASA's Chandra X-ray Observatory snapped the galaxy group NGC 4839. First, know what a galaxy group is as opposed to galaxy cluster. Galaxy groups are collections of about 50 galaxies or less and galaxy clusters can contain hundreds or thousands of galaxies. Both of these are enveloped by huge amounts of superheated pools of gas. They represent a significant portion of the mass in galaxy groups or clusters. Galaxy group NGC 4839 is located near the edge o...