Colliding Galaxies *_*

In case you are ever wondering how to construct a nebula in PS and make it 1000000000x better than the thing I uploaded, have a look at how nature does it:

http://hubblesite.org/newscenter/archive/releases/2010/25/image/a/format/zoom/

Btw, colouring was done by people ofc.

http://hubblesite.org/newscenter/archive/releases/2010/25/fastfacts/

damn…... awesome.. BTW how do they calculate the distance using light years?

Awesome

damn…... awesome.. BTW how do they calculate the distance using light years?

I think they approximate it based on the wavelength of the emissions received. Because the universe is expanding, over time the waves are forced apart (i.e. the wavelength decreases), from this they can get an approximation of the speed of the galaxy (by comparing two waves) and the distance from us.

damn…... awesome.. BTW how do they calculate the distance using light years?

I think they approximate it based on the wavelength of the emissions received. Because the universe is expanding, over time the waves are forced apart (i.e. the wavelength decreases), from this they can get an approximation of the speed of the galaxy (by comparing two waves) and the distance from us.

amazing…..