Wednesday 16 November 2016

[www.keralites.net] Milky Way And Andromeda Galaxy To Collide

 

 

We're on a collision course with the Andromeda Galaxy — here's what will happen to Earth

Jessica Orwig

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Far from city lights, on a clear night, this is what the sky on Earth looks like today. During certain times of the year, you can see the Andromeda Galaxy, circled below, next to the bright band of our own Milky Way.

The two galaxies will make quick work of one another. Just 250 million years after the collision, the remains will be a ghostly skeleton of what was once two independent galaxies.

But it's not over. The battle will continue for billions of years until the supermassive black holes at the center of each galaxy get close enough to merge.

Because it takes billions of years for galaxies to fully merge, astronomers search the skies for different stages of the epic battle. Below is an example of two spiral galaxies in an early stage of merging, photographed by Hubble in 2009.

And a different set of galaxies, in which one galaxy has been stretched and warped by the other's gravity.

And a different set of galaxies, in which one galaxy has been stretched and warped by the other's gravity.

You can watch all of the action unfold in the ScienceTV video on YouTube below.

 

 

Crash of the Titans: Milky Way and Andromeda Galaxy

 

 


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