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Can anyone help me with a spot of research I'm doing into #TimeTravel ?
The earth rotates and moves in orbit around the sun. The sun rotates around the Milky Way, etc.
I'm sure there's a theory somewhere that travelling to either past or present you need to know the co-ordinates of the earth in physical space for the spot you want to go to or you'll just disappear into space.
Does this ring any bells?
Please boost.