Author Topic: The Earth and Moon  (Read 475 times)

Offline Mince

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The Earth and Moon
« on: May 08, 2019, 12:59:03 PM »
Here is the moon and Earth, with sizes and distances to scale.

Light takes two seconds to get from the moon to the Earth, so what you see in the night sky is the moon two seconds ago.

If you make the distance between the moon and Earth 390 times larger, that's the distance between the Earth and the sun.

If you make the distance between the moon and Earth 107 million times larger, that's the distance between the Earth and the next nearest star, Alpha Centauri.


« Last Edit: May 08, 2019, 01:07:42 PM by Mince »

Offline Roger Kettle

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Re: The Earth and Moon
« Reply #1 on: May 08, 2019, 08:14:41 PM »
I can't help feeling I'm missing something. I kept looking at the attachment and waiting for an alien or something to suddenly appear on screen. Seven hours, I waited.
If your intention was to illustrate how far Earth is from Alpha Centauri, well, thank you. I kind of knew the distance was enormous but thank you anyway. You are now free to point out how stupid I've been.

Offline Mince

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Re: The Earth and Moon
« Reply #2 on: May 08, 2019, 08:38:09 PM »
Lol! The image is oversize. Scroll the image from left to right.

It's like the laptop lid all over again.

Offline Diane CBPFC

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Re: The Earth and Moon
« Reply #3 on: May 09, 2019, 08:05:05 PM »
I would like to congratulate everyone on their increasing maturity. Not one of you asked Mince about Uranus.
People will come from strange lands to hear me speak my words of wisdom. They will ask me the secret of life and I will tell them. Then maybe I'll finish off with a song. The Nomad

Offline Roger Kettle

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Re: The Earth and Moon
« Reply #4 on: May 09, 2019, 08:57:31 PM »
 ;D

Offline Mince

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Re: The Earth and Moon
« Reply #5 on: May 09, 2019, 09:25:00 PM »
Did you know that Mercury is on average the nearest planet to Uranus?

Offline Tarquin Thunderthighs lll

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Re: The Earth and Moon
« Reply #6 on: May 10, 2019, 12:19:25 PM »
It can be a problem.
I apologise, in advance.

Offline Mince

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Re: The Earth and Moon
« Reply #7 on: May 10, 2019, 01:49:40 PM »
[Diane: Tarks started this!]

Did you know that Uranus is huge and you can see it with the naked eye?

Did you know that Uranus is full of gas and produces a lot of wind?

Did you also know that Voyager 2 took loads of photos of Uranus in 1986 and now the EU want to probe it?

Offline Tarquin Thunderthighs lll

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Re: The Earth and Moon
« Reply #8 on: May 10, 2019, 01:58:41 PM »
[Diane: Tarks started this!]

Moot point. I think, in fact, it was Diane.
I apologise, in advance.

Offline Roger Kettle

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Re: The Earth and Moon
« Reply #9 on: May 10, 2019, 06:13:10 PM »
On Sunday morning, I will be travelling above the Earth for about three hours before touching down in Faro, Portugal. The temperature is predicted to be 27 degrees. I have no idea what the temperature on Uranus is.

Offline Mince

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Re: The Earth and Moon
« Reply #10 on: May 10, 2019, 07:10:45 PM »
I have no idea what the temperature on Uranus is.

That depends on whether the sun shines out of it.

Offline Tarquin Thunderthighs lll

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Re: The Earth and Moon
« Reply #11 on: May 10, 2019, 11:27:29 PM »
Okay - I'll give you that.  ;D
I apologise, in advance.

Offline Roger Kettle

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Re: The Earth and Moon
« Reply #12 on: May 11, 2019, 09:18:18 AM »
I have no idea what the temperature on Uranus is.

That depends on whether the sun shines out of it.

I'd hoped to avoid stuff like that by saying "ON Uranus" rather than "IN Uranus".

Offline Mince

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Re: The Earth and Moon
« Reply #13 on: May 11, 2019, 09:53:10 AM »
I'd hoped to avoid stuff like that by saying "ON Uranus" rather than "IN Uranus".

Ah, I misread. I doubt Uranus gets to see much light, but if Uranus had a black hole in it, that would change things.

Offline Tarquin Thunderthighs lll

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Re: The Earth and Moon
« Reply #14 on: May 11, 2019, 10:24:36 AM »
Please stop. Stop now.
I apologise, in advance.