Is there a realistic way to go back in time?

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answers:
Jeffrey K say: No, there us no way to go back in time. The laws of physics prevent it. Backwards time travel would cause paradoxes that can't be resolved.
Every proposed method has some problem. Wormholes collapse before anything can get thru. Tipler's rotating cylinder would fly apart. Gödel's rotating universe is not real because our universe doesn't rotate. Warp drives require negative energy in impossible amounts.
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PhotonX say: I'll be sure and ask the next time traveler I see, but until then I'm pretty sure the answer is 'no'. If time travel from the future to the past is possible, where are all of them?
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Adam say: Yes, but it involves materials unavailable on Earth.
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Acetek say: no
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grass say: Not yet...... soon
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Kim say: Come on its never going to happen
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WwwdotBibleSelectordotcom say: Not that we know of
but
interestingly
there is a realistic way of "seeing" back in time.

Imagine a (future) telescope that has a very, very, very high resolution. It can "see" something the size of a human being on another planet in another solar system.
Now imagine that we have some reflective surface, such as an ice moon (there's lots of those around, seemingly) that's about 50 light years away.

The light that leaves the Earth and reflects off that moon will take 100 years to travel to the moon and back to Earth.

If our imaginary telescope were good enough, we could see what was happening on Earth 100 years ago.

Of course there are a lot of technical issues that I have not addressed
so don't expect this sort of thing to happen during our lifetimes
but it does seem like something that might be really possible one day.
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say: Trump is a certified time traveller from 1592
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Let'S Just Go Somewhere say: Sadly not
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