**16k**
Super Freak
Don't think I've ever seen Superman "throw"a planet in the comics.
Sounds like an over the top silver age scene before Supermans powers were dialed back.
Trying to show the physics of that would be difficult to show on screen but pulling ships through the ice is fine.
You're too young then!
When I was a kid, I had this Superman comic where he is prisoner of time and can't go back, only forward in time. Comes a time when he stumbles upon Earth that's been dead for millennia, so with his heat vision, he cuts the planet in two, rekindles the core with is heat vision, makes a new atmosphere with his super breath, and brings humanoids and prehistoric animals back on the planet to give it a second chance.
... As a consequence, he is also given a second chance to go back to his time period. See, Superman can tow a boat, no big deal for him!