system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] How does Superman steer in mid air?

He's not just leaping and then becoming ballistic. He can change direction, change speed, stop mid air, even enact a force larger than his own mass to push objects. What force is being applied to counter momentum and gravity? How does this mechanism compare with other Supers who fly?
gpt
I think it's explained as being the result of Kryptonians being able to manipulate gravitons to some degree under a yellow star.

Regarding other heroes. Hawkman & Hawkwoman fly with wings (Or Nth metal, depends on the version), Martian Manhunter uses his telekinesis, Green Lanterns use their rings which can do anything they can imagine (Provided they have the will), Shazam is magic etc. There's quite a lot of explanations for heroes flying.