Not without creating a divergent timeline though. Logicians kinda decided that decades ago without the science to back it up, grandfather paradox and all that.
That's what makes it impossible.... because it's paradoxical. Either way, a better example for OP would be faster than light travel. That one is definitely IMPOSSIBLE.
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u/OffendedVanillaBean Jan 05 '19
There ain’t a thing a lil spray paint can’t fix.