'Dropping nuclear waste into the sun' is more expensive than most people think. It's a matter of delta-v. From here you can't just drop something down the Sun's

'Dropping nuclear waste into the sun' is more expensive than most people think. It's a matter of delta-v. From here you can't just drop something down the Sun's gravity well and expect it to fall in. In terms of energy cost it's more like lifting it all the way up there, more or less.