this post was submitted on 10 Jan 2025
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chapotraphouse
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This question caused me do some tangential navel gazing. The video mentions an escape velocity of 550km/s to leave the Milky way. According to some random stack exchange reply relative to Earth you will only need 317 km/s ∆v (because Earth is already orbiting around the galaxy at around 220 km/s).
I wonder how big such a rocket would be.
Best way to leave the milky way is probably to slingshot around a black hole. Stars get ejected from galaxies all the time like this
You don't have to be Ben Browder and surrounded by muppets, but it helps
Parker Solar Probe got up to a speed of 190 km/s during its mission by doing 7 gravity assists using Venus, which is like 10x faster than Voyager 1's speed - so like cosecantphi said - it is easier to just plan a trajectory that utilizes the gravity of some large object in the path of your destination rather than relying on pure thrust/a large rocket.
Important to note that Parker Solar Probe has this speed extremely deep within the Sun's gravity well, whereas probes exiting the solar system just climbed out entirely.