Suppose I went back 10 minutes in time.
I would end up in outer space because the earth is now in a different place.
The earth is rotating at 1,000mph and orbiting the sun at 60,000 mph.
So to successfully travel back in time, without dying, I would need to end up on the earth at the same orbital position.
This would be difficult as the earths orbit isnt circular.
So year on even then it would be in a different position.
Also if I go back in time What happens to the same space I am occupying that was previously air ? Will the air instantaneously move out of my space ?
Time travel is of course possible as we are all travelling through time through our lifetime.
Just a rant.
I would end up in outer space because the earth is now in a different place.
The earth is rotating at 1,000mph and orbiting the sun at 60,000 mph.
So to successfully travel back in time, without dying, I would need to end up on the earth at the same orbital position.
This would be difficult as the earths orbit isnt circular.
So year on even then it would be in a different position.
Also if I go back in time What happens to the same space I am occupying that was previously air ? Will the air instantaneously move out of my space ?
Time travel is of course possible as we are all travelling through time through our lifetime.
Just a rant.
Have you read this book ?
Dark Matter by Blake Crouch
I can't remember where it was that I read something similar - time travel back was only possible until when a super accurate clock was started. Otherwise, end up in space. Fiction for now.
As to your original question, we do a fairly good job with orbital mechanics, even now .....
Dark Matter by Blake Crouch
I can't remember where it was that I read something similar - time travel back was only possible until when a super accurate clock was started. Otherwise, end up in space. Fiction for now.
As to your original question, we do a fairly good job with orbital mechanics, even now .....
I'ld be a much more pessimistic.
We do know nothing about galaxy orbital speed around external gravity center, we do know nothing about rotating or speed of the whole universe.
The topology of the space-time aren't trivial as it seen in the telescope or binocular.
Really there are three different physics observed:
1. Quantum microspace with it's particle-wave duality and all quantum effects.
2. Galaxy-universe macrospace with it's predicted dark matter and dark energy and a bunch of ununderstandable effects.
3. Usual Earth's everyday space-time where are nor quantum, nor dark matter are observed.
And the most saddest - physics of those worlds aren't clued nowadays it the whole picture.
If you are swept back rather than suddenly appearing you will displace the air, but the displacement would likely now exceed the speed of sound. Rough ride.
Well, obviously you would have to have a time machine that would be able to reference an object in the present and the past ( such as the earth ) and place you at a reference to a point on that object. As for just popping in and out, that would create a large bang unless you beamed in slowly like Star Trek or phased in slowly like Dr Who.
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Actually, we are all travelling through Einstein's spacetime* at the speed of light, c.
A photon of light uses up all of its spacetime speed by moving through space at speed c thus leaving none for its passage through time.
So, the time a photon takes to travel to its destination is zero, no matter what distance it has to traverse i.e. its journey is instantaneous.
Now that's real time travel, or rather, the lack of it! 😀
*The word spacetime describes the Einsteinian concept of time and three-dimensional space being fused together in a four-dimensional continuum.
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Julie Miller - 12 - The Speed Of Light - Broken Things (1999) - YouTube
Time and space are relative
Einstein said back when he lived
The only thing that doesn't change
Makes everything else rearrange
Is the speed of light
Is the speed of light
Your love for me must be the speed of light
The man on the moon
Said the earth was blue
But you don't have to leave
To know that's true
The only thing that doesn't change
Makes everything else rearrange
Is the speed of light
Is the speed of light
Your love for me must be the speed of light
-- Julie Miller
Time and space are relative
Einstein said back when he lived
The only thing that doesn't change
Makes everything else rearrange
Is the speed of light
Is the speed of light
Your love for me must be the speed of light
The man on the moon
Said the earth was blue
But you don't have to leave
To know that's true
The only thing that doesn't change
Makes everything else rearrange
Is the speed of light
Is the speed of light
Your love for me must be the speed of light
-- Julie Miller
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Appearing in the same space as air would be a minor issue compared to appearing in the same space as a brick wall. Why are you asking, have you completed a time machine and investigating potential issues before pressing the go button?
@Galu
Good one!
I'll see your Morlocks and raise you a squadron of Daleks.
[I'd put a picture in here but I've yet to insert a picture successfully... sigh]
Good one!
I'll see your Morlocks and raise you a squadron of Daleks.
[I'd put a picture in here but I've yet to insert a picture successfully... sigh]
Thanks! And here's how to attach an image: How to attach images to your posts.
You'll get it right in TIME!
You'll get it right in TIME!
I almost had my beverage go thru my nose when I read that.... very funny...a Harlequin romance novel/soap opera the wife loves..... I have to leave the room each time it comes on. At least I get to work on my amps downstairs without bother.
