Time Travel

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I remember a tv show when I was a child, called The Time Tunnel. An American show, filmed in colour, but alas for me, viewed in black and white as that was the only way to watch tv where I lived. I found it gripping - there were lots of nail-biting situations for the intrepid time-travellers, not least of which the question of how they would return to our present, from the future or past in which they had landed. YouTube has some material from this show, including an 18-minute publicity feature that I've included below. As you watch, remember how many other sci-fi series kicked-off in the 60s, competition for viewing figures was fierce, and some had apparently llimitless budgets... I wonder if we'll ever figure out how to go back in time? What would happen to the present if we did...? Would we be able to get back to what was our present as quickly as we went backwards, or would we have to wait and go the long way around? Would that it was so easy - recent stories, such as The Chronothon, indicate that the travel bit is easy. Figuring out where in space that particular moment in time actually is, is the challenge, as the planets are constantly in motion as they orbit their sun out in space... Scary!