My 5th-grade teacher (10 years old for non-Americans) told us about Betelgeuse and how it could turn supernova any day. At the time I didn’t understand “any day” in a cosmic sense is a lot different than “any day” to a 10-year-old .but from that day on I was fascinated by the cosmos and Nice NASA Best Dad In The Galaxy Shirt. That was just about 20 years ago now, so thank you, OP, for delivering on a childhood dream of mine. Man, imagine how terrifying it would be to yank the Earth out of orbit, flinging it somewhere else. We’d be in total darkness, spinning around, gravity all messed up. I would love to have a theoretical discussion on what would happen on Earth if it was yanked out and hurled across space.

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In astronomy, there is a Doppler effect with a light called “red-shift”. Where if a body is moving away from you the light’s wavelength is slightly longer (i.e. redder) and if it is moving toward you then the wavelength is shorter (more blue). A black hole moving away from us is not much threat, Nice NASA Best Dad In The Galaxy Shirt. That is bad (then again, I’m not even sure if/how red-shift would work with a black hole. Unless it was on the accretion disk or some such). There’s a book called Seveneves that starts with a micro black hole traveling very quickly (maybe, unconfirmed) tearing through the moon and breaking it into seven chunks. Contrary to the more ‘interesting” option of the actual start changing. Either by the gas/fluid if the star getting mixed up or by the star actually going closer to going boom.

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The fun thing is that, due to time dilation. If you were somehow able to ride a proton ejected. By that supernova 50 million years ago until it arrived (shortly after the light) on earth. Nice NASA Best Dad In The Galaxy Shirt. Relativity theorizes if you move at the speed of light time doesn’t pass for you but it still passes for observers. If you stood 50 million light-years away and shot a photon in a direction, then you magically warp through space to that direction 50 million light-years away it would take 50 million years for that photon to get there. I wonder if we’ll ever harness this to be able to travel through the universe. Or if that’s even possible. This is far outside my breadth of knowledge.

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