this post was submitted on 21 Mar 2025
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Bullseye (lemmy.world)
submitted 4 months ago* (last edited 4 months ago) by lawrence@lemmy.world to c/comicstrips@lemmy.world
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[–] MyatZezou@piefed.social 13 points 4 months ago

https://xkcd.com/681_large/

The sun creates a big gravity well. The earth happens to be quite close to the top of this well (because of the inverse square low). It takes about the same energy to go down and up the gravitational well.