GENERAL KNOWLEDGE

Detailed explanation-1: -Observational evidence indicates that almost every large galaxy has a supermassive black hole at its center. For example, the Milky Way has a supermassive black hole in its Galactic Center, corresponding to the radio source Sagittarius A*.

Detailed explanation-2: -This is known as an active galactic nucleus (AGN), and is revealed by characteristic features in the spectrum of light from the galaxy and by X-rays produced close to the black hole as the hot gas plunges towards it. Most galaxies are thought to contain a black hole at the center.

Detailed explanation-3: -Almost every large galaxy, including our Milky Way, has a supermassive black hole at its center. These monster objects have hundreds of thousands to billions of times the Sun’s mass, although some scientists place the lower boundary at tens of thousands.

Detailed explanation-4: -It may seem blurry, but the supermassive black hole at the centre of the Milky Way has never been seen in such detail before. In fact, this is the first direct image of the cosmic behemoth, called Sagittarius A*, ever taken.