[Click on the picture to enlarge]
This is a picture of MACSJ0025 showing what happens when two giant galaxy clusters collide. For me the most amazing thing is the number of galaxies (you really need to enlarge the picture to get the full benefit) caught in this picture - each one might be the size of our own Milky Way galaxy or much larger.
Just thinking of all those stars which make up all those individual galaxies and wondering how many of them might have planets orbiting them - and then wondering how many of them might support life. . .
It's awe-inspiring.
We tend to see the world as being more or less at eye-level and downwards. But above our heads the majesty of the universe goes on turning, oblivious to our concerns.
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