system
Given the following post, respond as if you're commenting on Reddit:
human
How is Venus' gravity able to retain an atmosphere that is 93 times more massive and pressurized than Earth's?
gpt
Earth could hold onto an atmosphere that thick, actually much better than venus on account of ourh higher surface gravity, protective magnetosphere, and reduced solar wind intensity thanks tot he greater distance from the sun.

The real question isn't how/whether venus can retain its atmosphere, it's why venus ended up with a thick atmosphere in the first place, while earth got a comparatively thin one.

This mostly comes down to volcanism, which is the largest single sorce of atmosphere after planetary formation. Venus has been much more volcanically active than earth for msot of its life, and thus has a much thicker atmosphere.