this post was submitted on 29 May 2025
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Holy shit.
I've never been alive in a time when every human has been on Earth. That's crazy to think about...
Being born after 2000 should be illegal
They're old enough to have finished a master's degree
That is so crazy don't say that
finally someone said it, thank you
As a fellow old person, former millennial, I agree.
Get off my lawn.
This planet ain’t big enough for the two of us.
The loser has to go to space.
Oh no I'll 'accidentally' lose and finally be free from this world.
Deal
;n;
I have... and by way longer than I want to admit.
If you like pedantry, people have definitely flown in vehicles and even jumped.
I like pedantry but want to go the other way. The ISS orbits in the thermosphere, still inside Earth's atmosphere. I say that you haven't really left Earth until you exit the atmosphere.
i mean, even those guys who went to the moon still stayed within a very close proximity to the earth compared to the size of the solar system
only when people travel to mars they will really have left the earth
The Moon is basically Earth territory. You can't go to Hawaii and claim you left the US.
What's wrong with the karman line?
So basically, the Karman line is the theoretical highest point that an airplane can fly, or at least it was when it was calculated. If it were recalculated today it would be higher because of technological advancement. The definition used by the agencies that define it as the edge of space set an altitude near the originally calculated line. The functional difference between being above the line and below the line is that the keplar force will keep an object above the line from falling to Earth within 24 hours while drag will slow the object below the line enough for it to fall back to Earth within 24 hours. It's fine as a functional definition but I see no reason that it should be universally applied. In the scope of this discussion why should we consider something that will fall back to Earth in 25 hours not be on Earth but something that will fall back to Earth in 23 hours to be on Earth?
That's highly pedantic, you need to draw the line somewhere. At 120 km you get long-ish sustainable orbits, at 80 km objects decay within a single orbit. The ISS sits at around 420 km, well above that
Btw, the airplane limit calculated by von Kármán was closer to 80 km, the 100 km limit is not based on his calculations.
I had lived in exactly 2 days in my life time in which every human was on earth.
zygote.
I'M FREAKING 24!!!
Saaame