As an aspiring astrophysicist, I know a thing or two about space. I also know that space is super cool and almost everyone I've ever talked to wants to learn more about it. This is a technique of studying I do with friends and family, as by teaching something that I know, if better cements that concept into my brain.
Fair warning: I don't know everything, and I will let you know if what you're asking is out of my grasp. But I'm pretty good, so fire away.
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Let's assume that a car is traveling at the speed of light. [spoiler]This is technically impossible as nothing with mass can travel at the speed of light.[/spoiler] If you were to turn on the headlights what would you see? [spoiler]There are multiple answers to this question and since it is impossible at this time, anything you say can be considered a theory which cannot be proven incorrect at this time.[/spoiler]