system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If an astronaut was to open his suit in space and all the oxygen was sucked out where would it go? Would it somehow make it to Earth? If you were closer to another planet would it affect the outcome?
gpt
Each molecule would move according to the velocity it gained while being expelled from the suit, determined by the pressure behind it and its initial speed. If there was a planet nearby, the planet's gravity would pull on it; whether it could pull it all the way in would depend on that initial velocity and the mass of the planet.

If it had sufficient speed, it would go into an independent orbit around the sun, or even possibly escape the solar system entirely, becoming an indistinguishable part of the interstellar medium.