What our sky looks like in the future

NASA astronomers announced that they are certain that our galaxy is on an unavoidable collision course with another galaxy which is called "Andromeda Galaxy", the closest spiral galaxy to us. 

Don’t worry though, it won’t be happening for another 3.5 billion years or so. What’s interesting is that the collision will drastically change what our night sky looks like, and the astronomers released a series of photo illustrations showing what future astro-photographers will be shooting when they point their cameras at the skies.

Just for reference, here’s what the night sky currently looks like:

This is after 2 billion years as you can see the other galaxy on left is coming toward our milky way

This image represents Earth's night sky in 3.75 billion years. The Andromeda galaxy (left) will fill our field of view then, astronomers say, as it heads toward a collision with our Milky way galaxy. Image Credit: NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger

I personally like this stage more than the other stages, the night sky will be fascinating then!

At about 7 billion years, things will begin settling down. The two galaxies will form a new giant elliptical galaxy, with a single bright core filling up our nighttime sky

Good to know and by the way our sun – which is a middle-aged star – is about four-and-a-half billion years old.  Bottom line is that according to astronomers, our Milky Way galaxy and the Andromeda galaxy will collide in four billion years, but hopefully nothing devastating happens to earth!?