Halloween In Space: Creepy Entities Discovered In The Universe
As Halloween approaches, we look to the mysterious depths of the universe and find ghostly apparitions, spectral hands, skulls, wizards and witches. Or at least these are the descriptions applied by NASA to the jaw-dropping observations they have made.
The Perseus Cluster's X-Ray Skull. The red and orange show X-ray emitting gas in the cluster. The more intense yellow and white regions are in and around the supergiant galaxy,Perseus A. A small dark patch located at two o'clock from the center of the image is a galaxy with "only" about 20 billion stars that is falling into Perseus A. Another larger hole seen further out is thought to be due to a bubble of high energy particles ejected in an explosion from Perseus A hundreds of millions of years ago.