this post was submitted on 14 Apr 2024
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Science Memes

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submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
 
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[–] [email protected] 5 points 1 year ago (3 children)

So either we would have to invent teleportation along with time travel/ have some sort of "magnet pad' that must exist and not break at all times on earth, or its the time machine type where it just fast forwards everything around you until somehow you're in a mall

[–] [email protected] 4 points 1 year ago

Maybe this is why Stephen Hawkings time travellor party never worked out lol

[–] [email protected] 3 points 1 year ago

I should hope that if we had time travel landing pads, we'd have a pretty good log of maintenance times in the future.

The tough part to figure out, though, is that the more a pad is used, the more maintenance it requires, which in turn modifies the logs.

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[–] [email protected] 5 points 1 year ago

Well, since no one bothered to create a savepoint, we can't travel back in time anyway.

[–] [email protected] 4 points 1 year ago (3 children)

did you travel millions of years into the past?

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[–] [email protected] 4 points 1 year ago

Ahummm, well actually, * adjusts monocle * time travel is not possible and since nobody has invented time machines yet, neither of these scenarios would happen in reality.

[–] [email protected] 3 points 1 year ago

This is why you have to calibrate your time machine to track the relative gravity well.

[–] [email protected] 3 points 1 year ago (1 children)

I once saw a short film where this was taken into account: they moved back in time a few hours and ended you a few miles away too

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[–] [email protected] 3 points 1 year ago (2 children)

I'd like to believe that mass (and then by extension the Earth) "defines" the spacetime around it as much as it distorts spacetime near it. I suspect this may even be the underlying cause for the observation of speed of light being constant in the presence of earth/solar/galactic movement.

[–] [email protected] 3 points 1 year ago (1 children)

When I was a kid I thought that spacetime was created by mass. I thought that if you were to ever find the end of the universe you wouldn't be able to travel beyond because you would just create new spacetime everywhere you went.

And I thought that was scientific consensus. No idea where I got it from, though.

[–] [email protected] 2 points 1 year ago

My view has always been that space is "round", that there is no end of the universe because it just loops back around. Apparently this is all still unknown.

[–] [email protected] 2 points 1 year ago (1 children)

It'd be really interesting if time moves at different speeds in different bits of the galaxy, find out that none of the other solar systems have life because closer to the galactic center of someone dropped a teapot when the first life evolved on earth it still wouldn't have hit the floor.

Of course there's a lot of reasons this isn't the case but I dismiss them by saying they're all just an effect of distortion due to time variance.

Maybe we'll get s message from voyager saying 'arrived at a star 224 light years away, it was super quick because there's no time in the middle so you just skip that bit'

[–] [email protected] 2 points 1 year ago

Similar to a solar system's habitable zone there exists (or is suspected to exist) a galactic habitable zone. I think because of cosmic rays and radiation. So I guess most habitable planets would have more or less the same time dilation.

[–] [email protected] 3 points 1 year ago (1 children)

That's why you need a T.A.R.D.I.S.

[–] [email protected] 6 points 1 year ago

This. I like that Dr who actually has had this problem in universe. I don't recall the episode, but he went to earth and ended up at the right time, but not the right place, since you know, earth is moving.

Even if you were to use the sun as a reference we orbit the sun (relative to the position of the sun) at some incredible speeds. Time of day factors in, since we're rotating rather fast as well. So getting the right coordinates in space for a particular day, and a particular time in a particular year, for a specific place.... Well, good luck.

Which isn't to mention the fact that we're in a galaxy, which is moving as well, so using a point of reference outside the solar system becomes insane to try and calculate; which is what you would have to do in order to enable travel outside of our solar system with something like a TARDIS.

[–] [email protected] 2 points 1 year ago

It’s my belief that Time Machines aren’t immune to the effects of gravity. When time changes, the machine goes to the space it would be at if it was affect gravity for the whole time.

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