3 ms·

I have problems with time travel. #1 How do I manage my space/time emergence point vs. my starting point... What about the vector my kinetic presence is upon .

I have problems with time travel. #1 How do I manage my space/time emergence point vs. my starting point... What about the vector my kinetic presence is upon ... If I manage to emerge upon the correct side of the planet, not inside a wall... am I moving in the appropriate direction, considering revolutionary, planetary, solar, galactic, etc.vectors..? OK a computer can figure that out... even if it is possible to pass the kinetic vector forward? (OK that kills a lot of old SF films...) #2 isn't the universe expanding? If I take matter from now & shove it into the past/future, will it react at all with atoms from the other age? If that matter is me & my heart is beating, will the size of the oxygen atoms of that time be recognized by my red corpuscles... Wow 2-5 minutes viewing the future/past before my conscious brain melts... That's an E-ticket for sure. I think figuring out a way to extend/strengthen telomeres might be a safer way of traveling into the future. Yes, keeping these thoughts in mind can really mess with the enjoyment of some SF movies. Ohm how I suffer

russellbeattie 6y ago
Good thoughts. Your first problem also need to address your position in space itself. The Earth and solar system are travelling at 230 km/s in reference to the galactic center. Going back in time 100 years would plop you well out in interstellar space if you didn't account for your universal location as well.
- mcswell 6y ago
  I think the problem is worse than this. There is no universal coordinate system, no 0x0x0 coordinate to measure everything from. The Earth is moving wrt the galactic center, the galactic center is moving wrt...what? The Andromeda galaxy? Why should that galaxy be special? And the local cluster is moving wrt...what? All the other galaxy clusters, I suppose, but what does that mean?
  - sktguha 6y ago
    indeed . so the galaxy cluster might have moved by a really massive distance, assuming even if there is some universal coordinate system

russellbeattie 6y ago

Good thoughts. Your first problem also need to address your position in space itself. The Earth and solar system are travelling at 230 km/s in reference to the galactic center. Going back in time 100 years would plop you well out in interstellar space if you didn't account for your universal location as well.

mcswell 6y ago
I think the problem is worse than this. There is no universal coordinate system, no 0x0x0 coordinate to measure everything from. The Earth is moving wrt the galactic center, the galactic center is moving wrt...what? The Andromeda galaxy? Why should that galaxy be special? And the local cluster is moving wrt...what? All the other galaxy clusters, I suppose, but what does that mean?
- sktguha 6y ago
  indeed . so the galaxy cluster might have moved by a really massive distance, assuming even if there is some universal coordinate system