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Amazing Video Shows Size of Largest Galaxy in the Known Universe

The biggest galaxy in the known universe is basically staggering in size. But in order to understand its scale, you need to comprehend a little something about our own galaxy. For starters, the Milky Way galaxy is about nearly 100,000 light-years across. Astronomers estimate that Milky Way has nearly 200 billion stars. 


Our closest neighbor galaxy, the The Great Andromeda galaxy, is 2.5 million light-years away. It is about twice our size, coming in nearly 200,000 light-years. Now, the largest known galaxy in the known universe is IC 1101. And it is almost 6 million light-years across. IC 1101 is a compact elliptical galaxy with apparent magnitude of 14.7, and with a redshift of z=0.02564 (SIMBAD) or 0.025703 (NASA), yielding a distance of 100 to 120 Megaparsecs. Its light has taken 349.5 million years to travel to Earth.  

Take a minute to try and comprehend that. This galaxy could simply swallow the Milky Way, Andromeda, and all of the space in between. It’s not just bigger than our galaxy; it’s bigger than our corner of the universe. The Milky Way is a mere 100 thousand light-years. IC 1101 is 6 million. You can learn more about IC 1101, and how it got so big, in the video below:

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