What happens when galaxies collide?
Article posted on Friday, October, 9th, 2009 at 1:01 am// by Tom on Universe
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I think this video could explain it to you. It is an animation based on Hubble and computing calculations, because the fact is really slow, so we can’t “record” it. The nearest galaxies (one each other) are separated about 200.000 light years.
Aurora Borealis
Do you know what is it? Auroras, sometimes called the northern and southern (polar) lights or aurorae (singular: aurora), are natural light displays in the sky, usually observed at night, particularly in the polar regions. They typically occur in the ionosphere. They are also referred to as polar auroras. In northern latitudes, the effect is known as the aurora borealis, named after the Roman goddess of dawn, Aurora, and the Greek name for north wind, Boreas, by Pierre Gassendi in 1621.
But this is how they look from space:
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