How many galaxies are there in the universe 2017

By using our site, you acknowledge that you have read and understand our Privacy Policy and Terms of Use. The new estimate for the number of galaxies is ten times higher than the number seen in this image. Giavalisco UMass. Explore further. Journal information: Astrophysical Journal. Provided by Royal Astronomical Society. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission.

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Why is this? So how many galaxies are there in the Universe? Currently, the observable Universe, which has a radius of It stretches for , light-years in diameter and may contain at least billion planets and around billion stars. Now, if we were to imagine how many planets and stars those 2 trillion galaxies might have, we would probably have to throw out our calculators. This is especially true since some galaxies are several times larger than our Milky Way Galaxy.

The largest galaxy ever discovered in our Universe is the supergiant elliptical galaxy designated as IC This galaxy contains well above trillion stars, and it stretches for over 5.

Our own Milky Way has some satellite galaxies, which are very small galaxies that are gravitationally bound to larger ones. There are around fifty galaxies in the Milky Way, the largest of which is the Large Magellanic Cloud. This satellite galaxy has a diameter of only 14, light-years.

The Large Magellanic Cloud may have as many as 10 billion stars within it. This small galaxy will collide with our Milky Way in around 2. Currently, in , it was estimated that there are around 2 trillion galaxies in the observable Universe. Each galaxy is unique, ranging in size from 10, light-years to hundreds of light-years.

Galaxies have been classified under five categories: spiral, barred spiral, lenticular, elliptical, and irregular. Our Milky Way galaxy is a barred spiral galaxy. The Milky Way is considered an average-sized galaxy.

Now, if the Milky Way is an average galaxy, how does a giant galaxy look like? Well, it would like IC , which is currently the largest galaxy ever discovered. IC is more than 50 times larger than the Milky Way. According to Conselice, 2 trillion is roughly equivalent to the number of seconds in 1, average lifetimes. Space headlines. Please enter email address to continue.

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