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Full Sun - Half Moon?
#21
RE: Full Sun - Half Moon?
(September 25, 2013 at 3:50 pm)Jiggerj Wrote: Today at 10 a.m. the sun was full in the sky. I could see the whole thing. In the west the moon was at 2:00 in the sky. Nothing was between them, yet the moon was only at half moon. Anyone know why?

[Image: aliens_zps16982ddb.png]
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.
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#22
RE: Full Sun - Half Moon?
(September 26, 2013 at 9:12 am)Stimbo Wrote: I realise, but that triangle is only planar at certain very specific times. When it's not, no eclipse.

3 points always make a plane Wink
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#23
RE: Full Sun - Half Moon?
Granted, but the Sun-Earth Moon triangle isn't static. Things get complicated when one of those points is orbiting another in such a way as to cause its apparent position as seen from the third point to be above or below the second.

If the system formed a stable planar triangle, we would get solar and lunar eclipses every alternate fortnight.

The "How many Earths?" piece has an excellent illustration of this, in the slide about Kepler only being able to detect planets via the luminosity method when the planet passes in front of its star. If its orbit is outside the plane of this line of sight, this method won't see the planet.
At the age of five, Skagra decided emphatically that God did not exist.  This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair.  Only Skagra responded to it by thinking, 'Wait a second.  That means there's a situation vacant.'
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#24
RE: Full Sun - Half Moon?
(September 26, 2013 at 9:39 am)pocaracas Wrote: 3 points always make a plane Wink

I thought two wings, a fuselage, and a tail make a plane?
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.
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#25
RE: Full Sun - Half Moon?
(September 26, 2013 at 10:14 am)Doubting Thomas Wrote:
(September 26, 2013 at 9:39 am)pocaracas Wrote: 3 points always make a plane Wink

I thought two wings, a fuselage, and a tail make a plane?

It's a plane! Not a plane!

(September 26, 2013 at 10:07 am)Stimbo Wrote: Granted, but the Sun-Earth Moon triangle isn't static. Things get complicated when one of those points is orbiting another in such a way as to cause its apparent position as seen from the third point to be above or below the second.

If the system formed a stable planar triangle, we would get solar and lunar eclipses every alternate fortnight.

The "How many Earths?" piece has an excellent illustration of this, in the slide about Kepler only being able to detect planets via the luminosity method when the planet passes in front of its star. If its orbit is outside the plane of this line of sight, this method won't see the planet.

There you go talking about orbital planes... I know the two orbits are not co-planar, but at any moment, the system sun - earth (surface, where the person can see something) - moon always forms a triangle (always changing) on a non-static plane.
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#26
RE: Full Sun - Half Moon?
Indeed. I think we've gone way beyond the original point of clarifying how eclipses work, don't you?
Wink
At the age of five, Skagra decided emphatically that God did not exist.  This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair.  Only Skagra responded to it by thinking, 'Wait a second.  That means there's a situation vacant.'
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#27
RE: Full Sun - Half Moon?
(September 26, 2013 at 11:33 am)pocaracas Wrote: It's a plane! Not a plane!

[Image: Tattoo-da-Plane-Moms-Grilled-Cheese-Truck.jpg]
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.
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#28
RE: Full Sun - Half Moon?
Hey, this is my thread and everyone is getting all them frugals or frubals or whatever the hell they are. I want some! lol

Seriously, I'm glad you guys are having fun in this thread. I didn't expect it to go past two replies.
There is an ALLLL-knowing, ALLLL-powerful, inVISible being who is everywhere, who created the WHOLE universe, who lives in another dimension called heaven, who is perfect in every way, who was never born and will never die, and who watches you every minute of every day (even when you're squeezing one out on the toilet). There are also unicorns, leprechauns, Santa Claus, an Easter Bunny, and a giant purple people eater.

JUST BELIEVE IT!
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#29
RE: Full Sun - Half Moon?
Oh, you'd be surprised how long we can keep these things going. There's threads on here going back centuries.

Sort of.
At the age of five, Skagra decided emphatically that God did not exist.  This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair.  Only Skagra responded to it by thinking, 'Wait a second.  That means there's a situation vacant.'
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#30
RE: Full Sun - Half Moon?
(September 25, 2013 at 7:14 pm)freedomfromfallacy Wrote: This astronomy stuff is all over my head....Wink Shades

Apparently so is this religion stuff, or Christianity stuff. :-)
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