If The Moon Was At The Same Distance Away As The International Space Station

Submitted by: daegog 2 weeks ago in Science


In honor of our super moon, a different look. I find it a bit disturbing for some reason.

And now for some trivia from Yeti Dynamics:

When the Moon eclipses the Sun, the camera exposure is adjusted so that you can see the Light of the earth reflecting back upon the moon. This was actually done by using a stand in Earth model to get reasonably accurate Earth "shine", it is Blue on the left side because the moon is flying over the Gulf of Mexico, and is white/tan on the right side because that part is over the United States . it is Dark in the middle because it is casting a huge shadow, and that shadow does not reflect light back on the Moon. I didn't quite expect it to look like this, it was a nice surprise 

At this distance the Moon would rise in the west and set in the east, The Moon Orbits the Earth counterclockwise when viewed from the North pole looking *down*. the same direction that the earth rotates. Normally the Moon orbits much slower than the earth rotates so it rises in the east and sets in the west, however at 420km it orbits much faster, faster than the earth rotates underneath, therefore it will rise in the west and set in the east

The Moon would orbit very fast, somewhere between 130 mins and 90 mins, i'll work this figure out later, it's actually a simple problem, but i'm busy!

the Moon is tidally locked in this animation, even thou it doesn't *seem* like it. The reason for this is that we are Not viewing it from the center of the earth, but rather it's surface

the 420km altitude is measured surface to surface.  the center to center orbital distance is 8528km

The time in the video is sped up. the moon would transverse the sky slower.. like 10 mins (rough guess at this time)

The Moon is well within the Roche limit. at this distance the Moon would break up and form a new ring system. The Earth might also be destroyed.

The Moon is not in anyway Transparent, when it sets you're simply seeing the sky in front of it, and earth shine reflected onto it, remember it's in Space, it isn't in the air.
There are 15 comments:
Male 15,659
More fun spoilers:

https://youtu.be/i_OgGF92k_M

https://www.google.com/amp/www.dailymail.co.uk/sciencetech/article-4199400/amp/Earth-moon-COLLIDE-65-billion-years.html
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Male 1,989
Disregarding what Draculya has to say about it, I bet it would be cool and how would it effect how high you could jump. Would it be like in my flying dreams where I can jump over a tall building?
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Male 15,659
casaledana if you do, try and reach the L1 Lagrangian point... you'll get infinite air time.
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Male 1,989
Draculya Or maybe jump between them, you know from one to the other, that would be cool.
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Male 4,771
casaledana I am not a physics major, but if for some reason the moon was that close and DIDN'T rip into the earth, i still don't think it would lower the gravitational constant of the earth.


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Female 4,732
yikes. I suspect we'd all be dead if that happened anyway...
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Male 15,659
Gravitationally, the force would be about a million times stronger than the tides. Even if the two bodies didn't collide, it would rip everything off the earth as it passed and the earth would rip everything off the moon. The two bodies would rip each other to pieces. If it was a single pass, the earth would end up with a space ring or debris. However, a collision would be inevitable and absent a lot of closing velocity, the moon would be a permanent part of the earth.
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Male 9,021
Draculya Not to mention, they simulation does not appear to take into account that at that altitude a Moon's orbit would be in the order of minutes.
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Male 15,659
megrendel this whole thread reminds me of Bruce Almighty.
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Male 15,659
I was going to say... supermoon distance 357,000km vs ISS 408km
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Male 4,664
I believe at one time it was and has been moving away ever since. 1.5 inches per year or something close to that these days I think.
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Male 9,021
In case you need to keep the science straight, here's a quick reference guide.

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Male 6,092
megrendel LOL. I enjoyed that.
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Male 515
I bet all the songbirds would freaking lose their minds having to go to sleep every couple of hours.  I wouldn't mind it so much, though.  I need more sleep.
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Male 15,659
skeeter01 the orbital velocity would be crazy fast.
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