Comment on space
Knock_Knock_Lemmy_In@lemmy.world 2 months agoIf the machine has the ability to jump in time and space (needed to land in the same spot) then it would be a real waste to use it only on earth.
So we would need a mathematical model of the entire universe that is accurate to the metre over all time. This N body is much harder than the 3 body problem.
Or we use gravity and other methods to track relative stationary position.
So, what other methods can be used to determine rotation?
Atomic@sh.itjust.works 2 months ago
Jesus fucking Christ. We can still calculate the rotation of a body like we normally do.
You observe it. Wait 1 seconds. Observe it again. And the delta in position is your rotational speed per second.
That is the method. The only one
Knock_Knock_Lemmy_In@lemmy.world 2 months ago
So all travels to new planets require 2 jumps. One to get near and measure the rotation, and one to actually land. I’d prefer something more efficient.
Also there is the assumption that the surface rotational velocity is constant over time. This is only true for solid planets without gas or liquid centers. Insides can spin at different speeds than the surface.
Atomic@sh.itjust.works 2 months ago
I don’t even know what this conversation is about anymore. You wanna go inside a gas giant now?
How about this. When you develop timetravel through space in all dimensions to “jump” anywhere at any time. Let us know.
Knock_Knock_Lemmy_In@lemmy.world 2 months ago
It’s about how a theoretical time/space machine would navigate obeying current physics knowledge.
I’d like the option. I’d certainly like to land on planets with liquid cores.
Nah. Let’s design the solution now so it’s ready to be used when needed.