We could fly it into the sun, the problem is that until we have a space elevator the only way we have of getting it out of the atmosphere is via rockets and a rocket explosion with a nuclear waste payload would be very bad.
It would also be far cheaper to send that nuclear waste to Mars. It takes 55 times the energy to fly to the Sun than it does to go to Mars:
https://www.nasa.gov/solar-system/its-surprisingly-hard-to-g...
It would also be far cheaper to send that nuclear waste to Mars. It takes 55 times the energy to fly to the Sun than it does to go to Mars:
https://www.nasa.gov/solar-system/its-surprisingly-hard-to-g...