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What is a galaxy?

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity.

I have studied and analysed two galaxy in the constellation

  • NGC 4709 is a Elliptical Galaxy in the Centaurus constellation. It is situated south of the celestial equator.
  • NGC 4696 is an elliptical galaxy. It lies around 145,000,000 light-years away in the constellation Centaurus. It is the brightest galaxy in the Centaurus Cluster, a large, rich cluster of galaxies in the constellation of the same name.The galaxy is surrounded by many dwarf elliptical galaxies also located within the cluster. There is believed to be a supermassive black hole at the center of the galaxy.