collisions
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Galaxy, right ahead! The Milky Way’s on course for a head-on collision
One day, this is what the night sky will look like. Yup, that’s a galaxy (Andromeda, to be specific) headed straight for … our galaxy! Andromeda’s rushing towards us at the crazy fast speed of 250,000 miles per hour. Luckily, it is a galaxy far, far away, and so it will take 3.75 billion years […]