system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 - why does Venus spin in a different direction than the other planets in our solar system?

From what I just read, Venus spins clockwise while the other planets spin counterclockwise. Why is this?
gpt
We don't really know. It's presumed that it was due to a very large impact event from the early days of the solar system, when things were much more crowded (this same era is why the Moon exists; a planet roughly the size of Mercury formed in the same orbit as Earth and eventually slammed into it).