30 astronomers think this 2007 picture (that they just finished compiling) shows us 2 colliding galaxies.
Hit the original article for a cool explanation that involves black holes and star-life-cycles.
My best guess as to why these galaxies started fighting?
They’re crabby.
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Afterthought:
These star clusters may have formed as part of a loop of stretched material associated with the northern tail, or they may have formed from debris falling back onto the nucleus.
We use cardinal directions in space? That seems odd. Do we then add “up” and “down” to describe the 3rd dimension? This may require a follow-up post after reading, if someone can’t answer in the comments.
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Only when veiwing from Earth are N, S, E, and W used; and then only really used in a descriptive/relational way. Otherwise ephemeris are used. Stop by a bookstore and read the appendix of Anathem, it does an amazing job of explaining the math in a very simple, straight forward way.
Oh cool, thanks man. Here’s a link to the wiki I just read about ephemeris.
Is it just me, or is there no ‘Preview’ button?
I’ll fix it. Eventually.
And you’re punny!