I don't think anyone wants to send radioactive waste to the sun. The possibility of it exploding during launch and spreading over a wide area is way too high.

I don't think anyone wants to send radioactive waste to the sun. The possibility of it exploding during launch and spreading over a wide area is way too high. Burying it deep down in the earth is far safer. Sure, someone might eventually dig it up someday, but that'd be limited exposure in a confined area.