[Husker24]

The only thing I can think of would be to find a way to travel faster than the speed of light with a powerful telescope and look back on the earth as it was in the past. Other than that I would say its impossible, but what do I know im just a factory worker.

[Ciexyz]

I'll have to replay my copy of "The Time Machine" (2002, starring Guy Pearce and directed by H.G. Wells' grandson.)

[Wingy]

What if you flew in a giant circle and returned to Earth? Then you wouldn't need the telescope.

For the telescope thingy, you could just send them up in various positions to catch the light as it went by. Different distances would be different times.

But I'm just a factory worker too....

Merry Christmas

[I_dmc]

From what I recall of "The Philadelphia Experiment", it invovled time travel, which wasn't a desired result. It also involved spatial displacement, which may have been coincident with time travel.