How many of you believe the Earth is flat? Go.......

Thumbpicker said:
No it does not mean the moon is not in space. It's all or nothing with you isn't it... The pressure from those hydrogen atoms is completely negligible. A vacuum is never perfect - even in space. Read the scientific definition of a vacuum.

The tenuous outer atmosphere has always been known to extend well beyond the Karman line where space is deemed to start. Up to 10,000 kilometers. You're the one who thinks I think in black and white terms. You are well and truly guilty of it. The start of "space" is defined by convention. The moon is 384,000 kms away even if there is a bit of extra hydrogen from our atmosphere - it's going to be so tenuous it's still well and truly a vacuum - again the definition of a lab vacuum is not a volume completely devoid of atoms...

It's similar to people arguing over whether Pluto is a planet. A definition of "planet" can vary. It's agreed by convention and a consensus. It's not entirely black and white - it's a human construct/categorisation.

Atmosphere (nationalgeographic.org)

Space was never empty even beyond that. There are always atoms there too.

The friction is negligible past a certain point - but that's why the orbits of satellites decay above Earth. There's atmosphere there too - it's still space - it just has a slightly higher density of gas than further out.
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Surprise!
I think he’s a “visual learner”

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And by the way, you can't achieve a perfect vacuum anyways. There is no such thing, or at least it's theoretical.
 
acceptance said:
Cute. So you were aware that "The moon flies through Earth's atmosphere" and "We were not aware of it until we dusted off observations made over two decades ago by the SOHO spacecraft?" (2019) ... :rolleyes:
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I spoke to VB about it a while ago actually. He said that his beliefs tell him that men cannot go into space and I said that it’s a grey area and that moon could very well be considered “still part of earth” if you chose to spin it that way.

So yea, I was aware
 
acceptance said:
…so “the moon is in a vacuum but it’s still in the earth’s atmosphere” kinda situation
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If you want to call negligible stray atoms “the atmosphere” to prove a point, then sure that’s totally what it is. in that case, technically the moon has an “atmosphere” as well. It’s still in a vacuum though.
 
Aynirar27 said:
If you want to call negligible stray atoms “the atmosphere” to prove a point, then sure that’s totally what it is. in that case, technically the moon has an “atmosphere” as well. It’s still in a vacuum though.
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If true, seems to me the terms are thus meaningless, but whatever.
 
This is a worthy distinction for example, even though there is perhaps some variation depending on the individual.

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