mkruck77

Titan is a good example when assuming that methane abundance is from biological processes. Titan is filled with methane lakes and has a temperature of about -290 degrees Fahrenheit. Of course I don't think there's any like on titan, but even at that temperature, I don't think there's enough abundance of like that could generate that amount of methane from biological processes. A common process of planets during there stages of development until their cores are cooled is volcanic activity, which most likely causes the majority of methane in the cosmos, not life.

You mean 35 seconds in to the future, right? Are you assuming the sum of these velocities to be linear for the traveler (I would think no) To back up a bit, I don't think the motions within itself matters, as long as there is a system to know each direction of change; probably to the smallest quantum level (quarks) to eliminate any uncertainty. Because symmetries should be unchanged from past to present, you in theory should be able to locate the precise position of the past. You would have to reverse space time to the past position. The hard part to this question is how would you know the future position given uncertainty? Merged post follows: Consecutive posts merged Oh, I see...you still have to take the velocities into question to find a given point. I think most theoretical explanations seem to use a fixed position for simplicity, but of course you would have to account for movement.

This is a good question posted. Although the information within the universe is not destroyed, it has in fact changed, so you in turn must have a means or a system to know each direction of change; probably to the smallest quantum level (quarks) to eliminate any uncertainty. Because symmetries should be unchanged from past to present, you in theory should be able to locate the precise position of the past. So to your answer, the data is not stored, you would have to reverse space time to the past position. The hard question is how would this be achieved? Could it be achieved? I say it can't. Merged post follows: Consecutive posts merged FYI-This is a good question posted. Although the information within the universe is not destroyed, it has in fact changed, so you in turn must have a means or a system to know each direction of change; probably to the smallest quantum level (quarks) to eliminate any uncertainty. Because symmetries should be unchanged from past to present, you in theory should be able to locate the precise position of the past. So to your answer, the data is not stored, you would have to reverse space time to the past position. The hard question is how would this be achieved? Could it be achieved? I say it can't.