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Fri Jan 4, 2013, 06:55 AM

The actual distance between earth & moon!

14 replies, 3872 views

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Response to Ichingcarpenter (Original post)

Fri Jan 4, 2013, 07:04 AM

1. I've got about 1 3/4 inches

Funny! It's a bit under 1 1/2 inches when I look at it sideways. I wonder why that is.


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Response to longship (Reply #1)

Sat Jan 5, 2013, 10:02 AM

6. It's all about size with some people...

 

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Response to Ichingcarpenter (Original post)

Fri Jan 4, 2013, 07:16 AM

2. In a related (sort of) topic, the surface of the earth is said to be around 200,000,000 square

 

miles..... and since there is 14.7 pounds per square inch be exerted on the surface of the earth (allowing for the drop in pressure as altitude increases) so it would be wildly inaccurate however I wonder what the tonnage is for the entire atmosphere..... wait a minute, found it 5.5 quadrillion tons...

now the question is, as global warming progresses..... does that tonnage and the pressure on earth's surface decrease accordingly??


http://www.britannica.com/blogs/2012/01/how-much-does-earth-atmosphere-weigh/
The total mass of Earth’s atmosphere is about 5.5 quadrillion tons, or roughly one millionth of Earth’s mass. Air is heavier at sea level, since the air molecules sit close together, compressed by the weight of air from above. As elevation increases, however, air molecules grow farther apart, and the air becomes lighter.

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Response to 2on2u (Reply #2)

Sun Jan 6, 2013, 09:42 PM

8. If the average height of the atmosphere increases, gravity attracts it less and hence its

total weight goes down. I'm guessing that changes in the total mass and changes in the mix of gases in the composition of the atmosphere will dwarf that effect.

My guess.

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Response to 2on2u (Reply #2)

Mon Jan 7, 2013, 07:25 PM

10. Unless we started losing atmosphere entirely it wouldn't make a difference. (nt)

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Response to Posteritatis (Reply #10)

Mon Jan 7, 2013, 07:48 PM

11. My thoughts as well.... n/t

 

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Response to Ichingcarpenter (Original post)

Fri Jan 4, 2013, 04:57 PM

3. *Illustration not to scale

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Response to Ichingcarpenter (Original post)

Fri Jan 4, 2013, 05:31 PM

4. 6¼ inches? I'm taller than that and I can walk under the moon at its zenith.

 

Something is wrong.

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Response to Ichingcarpenter (Original post)

Fri Jan 4, 2013, 05:39 PM

5. By my calculations, the moon should be about twice as far away.

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Response to FiveGoodMen (Reply #5)

Wed Jan 9, 2013, 01:54 PM

14. Ah, never mind.

I blew this up on my screen and measured with a ruler, but plugged in 5/8 for the earth diameter when it was really 5/16.

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Response to Ichingcarpenter (Original post)

Sat Jan 5, 2013, 01:07 PM

7. Wow, it looks much, much further away then I had thought

 

How can the Earth even still hold onto it being that far?

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Response to Ter (Reply #7)

Mon Jan 7, 2013, 06:12 PM

9. Just sit under an apple tree.



The answer will hit you.

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Response to Ter (Reply #7)

Mon Jan 7, 2013, 07:56 PM

12. Well, we're 81 times heavier.. (nt)

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Response to Ichingcarpenter (Original post)

Mon Jan 7, 2013, 10:34 PM

13. Earth's Diameter at the Equator: 7,926.28 miles. Distance moon to Earth

 

about 30 earth diameters.

Earth's Diameter at the Equator: 7,926.28 miles The average distance from Earth to the Moon is 384,400 km (238,900 mi)

So 30+ Earth diameters would fit between Earth and moon in that picture. I think that's about right.

And since you might want to know: Diameter of the Moon in miles: 2,159 miles

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