Interstellar comet I3 is currently screaming thru the Solar System. There's no flyby possible from Earth, detected too late, but we could hack an encounter using one of the obsolete probes in Mars orbit.

But, we won't. Because that would involve NASA and JPL actually doing something creative and quickly. Back to Artemis on the Moon by 2034:

A: The Feasibility of a Spacecraft Flyby with the Third Interstellar Object 3I/ATLAS from Earth or Mars