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originally posted in: Ask me anything about Astronomy
4/6/2016 3:33:19 PM
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Hey me again. So according to my understanding, 2 cars approaching each other at 50 mph is about same as a car moving towards a still car at 100 mph. So what if 2 objects moving towards each other at the speed of light would be thought to be about the same as an object moving incredibly faster than light moving towards a still object. Do you think anything weird would happen or just a collision too fast to watch?
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  • This doesn't work for light because photons have zero rest-mass. As in, one photon cannot be considered to be at rest relative to the other, because they can never be at rest.

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  • But what about the 2 objects moving towards each other at/near the speed of light[spoiler]sorry for all this theoretical stuff[/spoiler]

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  • It's not theoretical, they just have a high velocity collision. That's what the Large Hadron Collider does. It is a [b]large[/b] ring that speeds up [b]hadrons[/b] and watches them [b]collide[/b]. It's helpful for studying particle physics, the history of the universe, and confirming theoretical presumptions, like the Higg's boson.

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