My engineering students explored this idea for a project. It turns out that sending something into the sun is really difficult. You have to overcome the velocit

My engineering students explored this idea for a project. It turns out that sending something into the sun is really difficult. You have to overcome the velocity of planet earth orbiting the sun, which means you need a delta-V of 8.8 km/s to get the waste into a high orbit above the sun, followed by another burn to reduce its velocity to zero at that orbit. That’s the same delta-V as going to Jupiter. You would need a lot of rockets.