Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. The bright central source is the supermassive black hole at the core of Perseus A itself. Dark circular voids just above and below the galaxy center, each about half the size of our own Milky Way Galaxy , are believed to be magnetic bubbles of energetic particles blown by the accreting black hole. Settling toward Perseus A , the cluster's x-ray hot gas piles up forming bright regions around the bubble rims. Dramatically, the long greenish wisp just above the galaxy's centre is likely the x-ray shadow produced by a small galaxy falling into the burgeoning Perseus A .
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