(i) Poul Anderson's Time Patrollers space-time travel in the sense that they change their spatial as well as their temporal coordinates. This is time travel with space added.
(ii) A spaceship that revolves around a T machine, as in Anderson's The Avatar, space-time travels in the sense that it make an interstellar journey that can end before it begins. This is space travel with time added.
Considered separately, space travel and time travel are entirely different, e.g., The First Men In The Moon and The Time Machine. However, space travel can also involve time dilation, e.g., Anderson's Tao Zero.
I am thinking in sound bites this morning, folks.
1 comment:
Kaor, Paul!
Elon Musk/SpaceX plan to send experimental super heavy Starships to Barsoon in March of next year. That is space traveling (hurrah!!!) even if these first ships are going to be unmanned.
Ad astra! Sean
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