I wanted to find a good altitude to put a Jool space station so I sent a spaceship to do a flyby. I made the periapsis as low as I could, forgetting this is how you do gravity assists.

I tried for just over 1,000 in game years to aerobrake in kerbin's atmosphere but it didn't go well. I could only get down to 68km which didn't slow me down much and after a few passes I was flung out into infinity.

To make things worse, although I don't think it matters at this point, the capsule only has 20 units of ablator.