So to travel into the future and be in the “same place” relative to your planet you’d need to solve the n-body problem for at least your local system to a suitable length of time. A slight error might mean you appear inside the planet or in outer space.
Mass bends spacetime so one could assert that a time machine could anchor itself to a sufficiently large mass, just like how things in orbit are still bound to the earth’s mass.
So to travel into the future and be in the “same place” relative to your planet you’d need to solve the n-body problem for at least your local system to a suitable length of time. A slight error might mean you appear inside the planet or in outer space.
Or maybe I don’t understand this stuff. :-)
You’d just send a drone back, to say 100 years ago, first and have it send you exact coordinates into the future.
Time paradox aside you’d probably have this data already, with all alternatives and can correctly time jump right away.
Mass bends spacetime so one could assert that a time machine could anchor itself to a sufficiently large mass, just like how things in orbit are still bound to the earth’s mass.
You’d also need to solve time travel.
Eh, let’s cross that bridge when we get to it