13 ms·
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
by 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 agoI 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 agoindeed . so the galaxy cluster might have moved by a really massive distance, assuming even if there is some universal coordinate system