Observations

Daily cosmobite: a giant galaxy

The Hubble Space Telescope image of the galaxy M87.M87, which is number 87 on a list of fuzzy objects discovered by the French astronomer Charles Messier, is one of the most interesting galaxies in the sky. Scientists using X-ray and optical observations recently calculated that at its centre there is a supermassive black hole with a mass six billion times that of the Sun.

The Hubble Space Telescope image of the galaxy M87. Courtesy NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

2 responses to “Daily cosmobite: a giant galaxy

    • Hello Lothar. Good question regarding the “jittery horizontal line”. Referred to as a jet, it is a beam of matter ejected by the supermassive black hole at the centre of the galaxy at speeds close to the speed of light.

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