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Post by 1dave on Dec 16, 2013 10:53:01 GMT -5
With the sun setting far to the south, have you noticed how far NORTH the moon is setting?
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Post by 1dave on Dec 16, 2013 10:55:11 GMT -5
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Post by mohs on Dec 16, 2013 22:06:22 GMT -5
serious moonlight
tonight
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Dec 16, 2013 22:52:23 GMT -5
Well, because of this thread, I did notice the moon rising not far from north by northeast. Definitely northeasterly. From my vantage in Chino, CA it seems the moon came up directly from Cedar City, UT. Definitely north of St. george...  |
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Post by 1dave on Dec 17, 2013 11:24:35 GMT -5
Investigators (I've given up on the word "scientist") are now pretty sure another planet hit the earth early in it's history, and the lighter outer crusts of each coalesced to form our moon. This tilted earth's axis giving us our seasons, and giving widely different orbital planes to all involved. As Mercury lost most of it's surface in a collision early in it's history, for my money, IT is the rest of the story, although many investigators believe the other belligerent was destroyed in the crash. When? Well the moon is about 384,405 km away and moving further at about 1.5 inches per year, so 384,405 km/1.5" =   Some data: Earth Mean Density (g cm -3) = 5.515 - Moon Mean Density = 3.344 The moon is 27% as big as the earth but only 1.2% as massive. As the moon moves away, angular momentum has caused the earth's rotation to slow down. The secular increase in length of days is ~ 0.002 seconds per century, but that adds up. Studies of diurnal and tide related growth rings in fossil corals show that 365 million years ago (mid Devonian times) days were 21.9 hours long and there were 400 days in a year. |
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Post by mohs on Dec 17, 2013 12:24:46 GMT -5
how come we only see one side of the moon?
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Deleted
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Member since January 1970
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Post by Deleted on Dec 17, 2013 13:29:11 GMT -5
When? Well the moon is about 384,405 km away and moving further at about 1.5 inches per year, so 384,405 km/1.5" =  39 inches per meter x 1000 meters per KM = 39,000 inches per KM 39,000"/KM x 384,000KM = 1.5 x 10 10" to the moon 1.5 x 10 10" divided 1.5" is (close enough) to 10,000,000,000 years. I suspect this happened somewhat later than 10 billion years ago. The earth is considered by investigators to be 4.5 billion years old. The slow retreat started after the original collision caused all the trauma and then soon after the two bodies settled in to today's outward spiral, beginning somewhere much closer than today, but not touching. |
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Post by 1dave on Dec 17, 2013 18:43:52 GMT -5
So we have to extract the distance between earth and initial moon and we have it right on the money!
Ain't nothin' to these astronomizin's
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Post by docone31 on Dec 17, 2013 18:53:06 GMT -5
We cannot see the other side, as it is secret.
Secrets are supposed to be dark.
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phoenix1647
starting to spend too much on rocks
Member since March 2013
Posts: 186
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Post by phoenix1647 on Dec 17, 2013 19:25:47 GMT -5
We can only see one side of the moon because it is flat.
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Post by 1dave on Dec 17, 2013 19:42:16 GMT -5
We can only see one side of the moon because it is flat. So IF it was a real moon . . . Is Obama using a fake moon to spy on us? Isn't the IRS enough? |
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Post by mohs on Dec 17, 2013 20:04:48 GMT -5
I just knew it !
your all a bunch loonies ha ha
moonstonely
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Post by 1dave on Dec 18, 2013 12:23:03 GMT -5
how come we only see one side of the moon? |
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Post by mohs on Dec 18, 2013 12:47:48 GMT -5
Its really boggles the mind, 1dave!
double Thanks!!
I keep thinking of the Moon as the pendulum bob of the Earth.
And how the Foucault Pendulum device
shows the rotation of the earth
boggles my mind
doubly...mostly
O and "Foucault's Pendulum" by Umberto Eco is my favorite novel
fyi
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Post by 1dave on Dec 19, 2013 11:51:31 GMT -5
When I was a kid I'd climb up on the roof to watch eclipses and the setting of the huge harvest moon.
That was when I first noticed the sun and moon changing places as the year progressed.
Summer, Sun far northwest, moon far southwest. Come winter time, they had reversed.
People used to notice things like that.
Now all most people watch are TV's and Game-boys.
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Deleted
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Member since January 1970
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Post by Deleted on Dec 19, 2013 12:25:32 GMT -5
And most have never even seen the milky way. It's not possible in much of the country.
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Post by rockpickerforever on Dec 19, 2013 12:45:15 GMT -5
When I was a kid I'd climb up on the roof to watch eclipses and the setting of the huge harvest moon. That was when I first noticed the sun and moon changing places as the year progressed. Summer, Sun far northwest, moon far southwest. Come winter time, they had reversed. People used to notice things like that. Now all most people watch are TV's and Game-boys.
I love to watch the sun, moon and stars dance through the sky throughout the year. My house is on a street that runs due north/south. On the solstices spring and fall Equinoxes, the sun sets directly to the west (I'm at N 32.70154 degrees), and the sunshine streams directly in my front door.
I also love to watch the constellations change over the seasons. Going to the desert during desert season (fall/winter, when it's not too hot), I am more familiar with the winter constellations, and I love to see the more southern ones that are below the southern horizon most of the year. Also get a great view of the Milky Way out there! Being as I live on the east side of the major metropolitan area that is San Diego, there is a lot of light pollution, but I can still see many of the brighter stars and constellations from home. I'm usually too busy to look up during the summer months, except when taking the dog out in the morning, lol!
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Post by mohs on Dec 19, 2013 12:48:20 GMT -5
The best demonstration I saw of the moon phases
Is one you can try at home !
Take a round rock
A moonstone would be fine
But any softball size round object
Place your body with a lamp behind your head
The lamp will represent the sun
Your head will represent the earth
Now extend your arm out at eye level
With said round rock in hand
This is the moon
Rotate your body- turn in a circle-
Slowly at first
Faster if you really want to have a thrill
Observe the shadow on the round rock
As you rotate around
The phases of the moon will appear
When you are 180 degrees to the lamp
The round rock-representing the moon- is in front of lamp
& head- representing the earth- looking into lamp
You have new moon
Someone will have to explain why
moonstonly
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GeorgeStoneStore
starting to spend too much on rocks
Member since November 2011
Posts: 168
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Post by GeorgeStoneStore on Dec 19, 2013 13:03:38 GMT -5
milky way from Hungary. ... many minerals ...   |
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Dec 19, 2013 13:45:28 GMT -5
very nice image of the milky way.
I had better start bringing my good camera on this desert trips. Did not bring it to cady's ====FAIL====
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