How far is the firmament?

Is there any video or article talking about how far up is the firmament? Is there a video of people hitting the firmament somehow? I’m curious

Redditor: ofexagency

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  • I don’t think it’s possible to find out the exact height. Some, including zetetic astronomy have triangulated the sun to be 3-4k miles up. The issue is that the gasses get so light, they can no longer be pushed upon by combustion to create propulsion. I believed that happens somewhere about the 70-100 mile mark. If I had to guess, I’d say 500-1000 miles up.

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