this post was submitted on 10 Apr 2024
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Showerthoughts
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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
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nah, the reason is: when you travel back in time, our galaxy, solar system and planet are in different absolute universal positions. so you end up alone in deep space and by the time the planet reaches your position the time you traveled back has passed, making it absolutely useless and life threatening.
Pretty sure there is no absolute universal position, everything in the universe being in motion relative to everything else as the universe expands, but that does not disprove your point anyways.
You can use the cosmic microwave background as a universal reference frame. Relative to that we move at about 370 km/s, depending on the time of the year.
Now I'm hurting my head by thinking about traveling faster than 370 km/s in the opposite direction to Earth...
For reference: Voyager 1 is traveling at 17 km/s away from the sun. The Parker Solar Probe should reach 191 km/s but will be flying towards the sun.