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LOVE THIS MOON PHOTO BECAUSE ...

 
Dr. AstroModerator
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12/17/2012 03:21 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
where is the crater under the lander.
 Quoting: geerod

there shouldn't be one. The rocket was throtlled down for landing and the overal pressure of the exhaust was close to 1 PSI. Also, they usually cut off the engine a few feet above the ground. There is however some scouring of the surface dust and that is visible in photographs.

the rocket exhaust should have left a crater under it NO?
 Quoting: geerod

no.

also no moon dust covering the nice clean aluminum covered landing pods.hum????????????
 Quoting: geerod


Why should there be? First, it isn't true that there is no dust. There is some and that can be seen in some photos. There isn't much though because the rocket and dust were in a vacuum. And dust kicked up wasn't suspended in the air like it would be on Earth. It doesn't hang around like we see when dust clouds up here on Earth. It falls quickly. The rocket exhaust carried it quickly away from the landing site so very little landed on the pads. Also, again, the rocket was usually turned off a few feet before touch down meaning even less chance for any dust to hit the pads.
 Quoting: Weasel_Turbine


^This x10000!
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12/17/2012 03:46 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
It´s funny that while the astronauts always are pictured in broad daylight, the surroundings often seems like evening or nighttime. That 'Sun' should spread its light equally in all directions?
zvezda 1

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12/17/2012 03:49 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
AND IN THIS MOST WONDERFUL SHOT TAKEN ON THE MOON

The Sun has come down
He has focussed on himself
So the sky around is pitch black,
And the Sun's brightness also is very concentrated...

Excellent photograph of the Sun.....

PLEASE DONT MISS THIS ONE...
[link to www.lpi.usra.edu]
 Quoting: ROB 27371577


Lens flare. Period.
#Geomagnetic_Storm#
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12/17/2012 03:55 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
SORRY FORGOT THE LINK...


[link to www.lpi.usra.edu]
 Quoting: Anonymous Coward 27371577


Yes, yes I agree. To bad the Hasselblad camera measuring points do not match up. Although a very good job of cropping.
 Quoting: Lab Lover


You do realize that's a stitched panorama, not the raw original photos, right?
 Quoting: Dr. Astro


Gotta love the NonPanoramaTards.
zvezda 1

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12/17/2012 04:02 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
I have a question. How is the temperature on the moon's surface changing(during day and night), if there's no atmosphere and it stays in pure vacuum?
Anonymous Coward
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12/17/2012 04:04 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
:lovesmile27:
:spacesmile77:
SORRY FORGOT THE LINK...


[link to www.lpi.usra.edu]
 Quoting: Anonymous Coward 27371577
Anonymous Coward
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12/17/2012 04:17 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
IT ISN'T JUST THE ATMOSPHERE, BUT THE DARKNESS THAT SURROUNDS THE SUN.

how can it be possible? you dont see your sky dark during midday...
 Quoting: ROB 27371577


On the Earth, the sky is blue because of atmosphere, without atmosphere the sky stay black.
zvezda 1

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12/17/2012 05:09 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
I have a question. How is the temperature on the moon's surface changing(during day and night), if there's no atmosphere and it stays in pure vacuum?
 Quoting: zvezda 1
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Re: LOVE THIS MOON PHOTO BECAUSE ...
I have a question. How is the temperature on the moon's surface changing(during day and night), if there's no atmosphere and it stays in pure vacuum?
 Quoting: zvezda 1

 Quoting: zvezda 1


Radiative heating and cooling.
astrobanner2
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Re: LOVE THIS MOON PHOTO BECAUSE ...
I have a question. How is the temperature on the moon's surface changing(during day and night), if there's no atmosphere and it stays in pure vacuum?
 Quoting: zvezda 1

 Quoting: zvezda 1


Radiative heating and cooling.
 Quoting: Dr. Astro


How is the radiation transferred through the vacuum in space?
Dr. AstroModerator
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12/17/2012 05:22 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
I have a question. How is the temperature on the moon's surface changing(during day and night), if there's no atmosphere and it stays in pure vacuum?
 Quoting: zvezda 1

 Quoting: zvezda 1


Radiative heating and cooling.
 Quoting: Dr. Astro


How is the radiation transferred through the vacuum in space?
 Quoting: zvezda 1


Photons of light.
astrobanner2
Éireann
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12/17/2012 05:23 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
It breaks my heart to see people trying to debunk the beauty of our accomplishments. Going to the moon was one of the most amazing moments of my life. Ok, I was only going on 3, but I remember it. I kept getting pissed that it was taking so long to launch the rocket. Poor mom and dad chuckle They were trying so hard to keep me occupied that day so I didn't sit in front of the TV waiting. I was so afraid I'd miss it. When the rocket did finally launch, I ran outside to see it and was perplexed as to why I could not. Damn curvature of the earth :D

Anyway. Space has always been my greatest love. For me, it holds all of the clues, secrets, and explanations for why I am here, who I am, and why I am. I wish that just for a moment I could let people see space through my eyes. How glorious and terrifying it must have been for the handful of men that were able to walk on a new world and behold the earth from afar.
Éireann~

Eisteacht le gra! ~ArunaLuna (Translation from Gaelic: "Listen to Love!")

"And I sincerely believe, with you, that banking establishments are more dangerous than standing armies; and that the principle of spending money to be paid by posterity, under the name of funding, is but swindling futurity on a large scale." - Thomas Jefferson, from a Letter to John Taylor written in 1816

"Unfortunately, it is in the nature of man to tinker - even with immutable truth. Thus, we must be ever vigilant... - James Munford

“It is a sad fate for a man to die too well known to everybody else, and still unknown to himself.” - Francis Bacon

"Better the illusions that exalt us than ten thousand truths" - Aleksander Pushkin
*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~
I do not give negative Karma. I believe that all opinions are worthy of debate and discussion. Free speech is essential to the growth and advancement of each individual and all of Humankind.
Halcyon Dayz, FCD
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12/17/2012 05:24 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
It´s funny that while the astronauts always are pictured in broad daylight, the surroundings often seems like evening or nighttime. That 'Sun' should spread its light equally in all directions?
 Quoting: Swedish Coward 26542361

There's no air to scatter the light.
All there is is direct sunlight and reflected sunlight.

It's an alien environment. Things behave and look different than your common experience tells you things should.


I have a question. How is the temperature on the moon's surface changing (during day and night), if there's no atmosphere and it stays in pure vacuum?
 Quoting: zvezda 1

Heat energy can be transported by electro-magnetic radiation, and conduction: it is transferred to matter the object actually touches.
Convection is a special case of conduction that occurs in liquids and gasses.

The surface is heated up by sunlight. At right angle with the Sun that would be about 1.4 kW of solar energy per square metre.
It loses its heat by radiating infra-red into space (everything that has a temperature radiates) and by conducting it to the lower cooler layers.

If the surface gets more energy from the Sun than it loses it warms up, if it gets less energy from the Sun than it loses (like at night) it cools down.

Thermodynamics 101.

What Earth's atmosphere does is transport energy around and reduce how fast heat is radiated into space.
It works like a blanket, so to speak.* Without it average temps would be lower.
Heat loss is of course not completely eliminated, Earth would be a molten blob if that were the case.
It still gets cold during the night.
book

*The atmosphere is less transparent for the wavelengths in which the Earth radiates than for the wavelengths the Sun's radiation is strongest.
This causes the so called Greenhouse Effect.

(For basic science Wikipedia is actually a good starting point.)

Last Edited by Halcyon Dayz, FCD on 12/17/2012 05:52 AM
Hatred is a cancer upon the world.
It rots the mind and blackens the heart.


Hi! My name is Halcyon Dayz and I'm addicted to morans.
Dr. AstroModerator
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12/17/2012 05:26 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
It breaks my heart to see people trying to debunk the beauty of our accomplishments. Going to the moon was one of the most amazing moments of my life. Ok, I was only going on 3, but I remember it. I kept getting pissed that it was taking so long to launch the rocket. Poor mom and dad chuckle They were trying so hard to keep me occupied that day so I didn't sit in front of the TV waiting. I was so afraid I'd miss it. When the rocket did finally launch, I ran outside to see it and was perplexed as to why I could not. Damn curvature of the earth :D

Anyway. Space has always been my greatest love. For me, it holds all of the clues, secrets, and explanations for why I am here, who I am, and why I am. I wish that just for a moment I could let people see space through my eyes. How glorious and terrifying it must have been for the handful of men that were able to walk on a new world and behold the earth from afar.
 Quoting: Éireann


Have you seen In the Shadow of the Moon? I think you would love it. One of my favorite documentaries of all time. Really gives you an inside look at how the astronauts perceived the missions.
astrobanner2
zvezda 1

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12/17/2012 05:32 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
...

 Quoting: zvezda 1


Radiative heating and cooling.
 Quoting: Dr. Astro


How is the radiation transferred through the vacuum in space?
 Quoting: zvezda 1


Photons of light.
 Quoting: Dr. Astro

That means the Sun may be cold and still providing heat. How do we know the sun is hot?
Éireann
Eisteacht le gra!

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12/17/2012 05:35 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
It breaks my heart to see people trying to debunk the beauty of our accomplishments. Going to the moon was one of the most amazing moments of my life. Ok, I was only going on 3, but I remember it. I kept getting pissed that it was taking so long to launch the rocket. Poor mom and dad chuckle They were trying so hard to keep me occupied that day so I didn't sit in front of the TV waiting. I was so afraid I'd miss it. When the rocket did finally launch, I ran outside to see it and was perplexed as to why I could not. Damn curvature of the earth :D

Anyway. Space has always been my greatest love. For me, it holds all of the clues, secrets, and explanations for why I am here, who I am, and why I am. I wish that just for a moment I could let people see space through my eyes. How glorious and terrifying it must have been for the handful of men that were able to walk on a new world and behold the earth from afar.
 Quoting: Éireann


Have you seen In the Shadow of the Moon? I think you would love it. One of my favorite documentaries of all time. Really gives you an inside look at how the astronauts perceived the missions.
 Quoting: Dr. Astro

No I haven't, but I will :) Thank you!!
Éireann~

Eisteacht le gra! ~ArunaLuna (Translation from Gaelic: "Listen to Love!")

"And I sincerely believe, with you, that banking establishments are more dangerous than standing armies; and that the principle of spending money to be paid by posterity, under the name of funding, is but swindling futurity on a large scale." - Thomas Jefferson, from a Letter to John Taylor written in 1816

"Unfortunately, it is in the nature of man to tinker - even with immutable truth. Thus, we must be ever vigilant... - James Munford

“It is a sad fate for a man to die too well known to everybody else, and still unknown to himself.” - Francis Bacon

"Better the illusions that exalt us than ten thousand truths" - Aleksander Pushkin
*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~
I do not give negative Karma. I believe that all opinions are worthy of debate and discussion. Free speech is essential to the growth and advancement of each individual and all of Humankind.
Anonymous Coward
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12/17/2012 05:38 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
DID YOU OBSERVE?

1. THE SHADOW OF THE PHOTOGRAPHER FALLS TO HIS FRONT

2. THE SHADOW OF THE SPACECRAFT TO THE LEFT

3. THE SUN IS FACING BOTH...

 Quoting: ROB 27371577


bushfingdickputinOh Shitobigbroogrrr1984
Dr. AstroModerator
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Re: LOVE THIS MOON PHOTO BECAUSE ...
...


Radiative heating and cooling.
 Quoting: Dr. Astro


How is the radiation transferred through the vacuum in space?
 Quoting: zvezda 1


Photons of light.
 Quoting: Dr. Astro

That means the Sun may be cold and still providing heat. How do we know the sun is hot?
 Quoting: zvezda 1


Because it is a very good black body radiator and the peak of its radiation curve shows that it is hot.
astrobanner2
zvezda 1

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12/17/2012 06:10 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
...


How is the radiation transferred through the vacuum in space?
 Quoting: zvezda 1


Photons of light.
 Quoting: Dr. Astro

That means the Sun may be cold and still providing heat. How do we know the sun is hot?
 Quoting: zvezda 1


Because it is a very good black body radiator and the peak of its radiation curve shows that it is hot.
 Quoting: Dr. Astro


Are you sure?
[link to www.michaelbach.de]
Halcyon Dayz, FCD
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12/17/2012 06:29 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
Because it is a very good black body radiator and the peak of its radiation curve shows that it is hot.
 Quoting: Dr. Astro

Are you sure?
[link to www.michaelbach.de]
 Quoting: zvezda 1

Pray tell, what do optical illusions have to do with spectography?

And pray tell, with what mechanism could a cold body produce zillions of Watts of blackbody radiation?
book
Hatred is a cancer upon the world.
It rots the mind and blackens the heart.


Hi! My name is Halcyon Dayz and I'm addicted to morans.
Zeff

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12/17/2012 06:36 AM

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Re: LOVE THIS MOON PHOTO BECAUSE ...
moon landing = hoax.

yawnsleeping
roots of USA [link to www.legrandsoir.info]
Berlin vs Palestine wall [link to img15.hostingpics.net]
zvezda 1

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12/17/2012 06:45 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
Because it is a very good black body radiator and the peak of its radiation curve shows that it is hot.
 Quoting: Dr. Astro

Are you sure?
[link to www.michaelbach.de]
 Quoting: zvezda 1

Pray tell, what do optical illusions have to do with spectography?

And pray tell, with what mechanism could a cold body produce zillions of Watts of blackbody radiation?
book
 Quoting: Halcyon Dayz, FCD


1. Just want to say that nothing is what it seems!
2. Photons = pure energy! You don't even need the word "watts". It's just a word.
Anonymous Coward
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12/17/2012 06:53 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
where is the crater under the lander.
 Quoting: geerod

there shouldn't be one. The rocket was throtlled down for landing and the overal pressure of the exhaust was close to 1 PSI. Also, they usually cut off the engine a few feet above the ground. There is however some scouring of the surface dust and that is visible in photographs.

the rocket exhaust should have left a crater under it NO?
 Quoting: geerod

no.

also no moon dust covering the nice clean aluminum covered landing pods.hum????????????
 Quoting: geerod


Why should there be? First, it isn't true that there is no dust. There is some and that can be seen in some photos. There isn't much though because the rocket and dust were in a vacuum. And dust kicked up wasn't suspended in the air like it would be on Earth. It doesn't hang around like we see when dust clouds up here on Earth. It falls quickly. The rocket exhaust carried it quickly away from the landing site so very little landed on the pads. Also, again, the rocket was usually turned off a few feet before touch down meaning even less chance for any dust to hit the pads.
 Quoting: Weasel_Turbine


^This x10000!
 Quoting: Dr. Astro

derp x10000
[link to www.hq.nasa.gov]
102:45:17 Aldrin: 40 feet, down 2 1/2. Picking up some dust.

[Armstrong, from the 1969 Technical Debrief - "I first noticed that we were, in fact, disturbing the dust on the surface when we were something less than 100 feet; we were beginning to get a transparent sheet of moving dust that obscured visibility a little bit. As we got lower, the visibility continued to decrease. I don't think that the (visual) altitude determination was severely hurt by this blowing dust; but the thing that was confusing to me was that it was hard to pick out what your lateral and downrange velocities were, because you were seeing a lot of moving dust that you had to look through to pick up the stationary rocks and base your translational velocity decisions on that. I found that to be quite difficult. I spent more time trying to arrest translational velocity than I thought would be necessary."]
Dutchguy

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12/17/2012 06:55 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
DID YOU OBSERVE?

1. THE SHADOW OF THE PHOTOGRAPHER FALLS TO HIS FRONT

2. THE SHADOW OF THE SPACECRAFT TO THE LEFT

3. THE SUN IS FACING BOTH...

 Quoting: ROB 27371577


It's a friking PANORAMA photo, is that so hard to understand, yes the shadows do not fit in line if it was a straight photo, but if you look around you can make up a PANORAMA so the shadows are in their correct places, on the left side the shadows go left, in the middle the are towards the camera and on the right the shadows go right.

If you would print the photo and stick the left and right sides to each other then you have the photo as how its meant to be viewed..

Last Edited by Dutchguy on 12/17/2012 06:56 AM
"If History is thought with oppression, war and genocide, then how else would the future be?"

"How can one learn positive if one only gets preached negative!."
Anonymous Coward
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12/17/2012 06:58 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
where is the crater under the lander.
 Quoting: geerod

there shouldn't be one. The rocket was throtlled down for landing and the overal pressure of the exhaust was close to 1 PSI. Also, they usually cut off the engine a few feet above the ground. There is however some scouring of the surface dust and that is visible in photographs.

the rocket exhaust should have left a crater under it NO?
 Quoting: geerod

no.

also no moon dust covering the nice clean aluminum covered landing pods.hum????????????
 Quoting: geerod


Why should there be? First, it isn't true that there is no dust. There is some and that can be seen in some photos. There isn't much though because the rocket and dust were in a vacuum. And dust kicked up wasn't suspended in the air like it would be on Earth. It doesn't hang around like we see when dust clouds up here on Earth. It falls quickly. The rocket exhaust carried it quickly away from the landing site so very little landed on the pads. Also, again, the rocket was usually turned off a few feet before touch down meaning even less chance for any dust to hit the pads.
 Quoting: Weasel_Turbine


^This x10000!
 Quoting: Dr. Astro

derp x10000
[link to www.hq.nasa.gov]
102:45:17 Aldrin: 40 feet, down 2 1/2. Picking up some dust.

[Armstrong, from the 1969 Technical Debrief - "I first noticed that we were, in fact, disturbing the dust on the surface when we were something less than 100 feet; we were beginning to get a transparent sheet of moving dust that obscured visibility a little bit. As we got lower, the visibility continued to decrease. I don't think that the (visual) altitude determination was severely hurt by this blowing dust; but the thing that was confusing to me was that it was hard to pick out what your lateral and downrange velocities were, because you were seeing a lot of moving dust that you had to look through to pick up the stationary rocks and base your translational velocity decisions on that. I found that to be quite difficult. I spent more time trying to arrest translational velocity than I thought would be necessary."]
 Quoting: Anonymous Coward 29949639

102:46:xx Armstrong (onboard): Both (garbled) vent.

[Aldrin, from the 1969 Technical Debrief - "We had a little right drift and, then, I guess just before touchdown, we drifted left."]

[Armstrong, from the 1969 Technical Debrief - "I think I was probably over controlling a little bit in lateral. I was confused somewhat in that I couldn't really determine what my lateral velocities were due to the dust obscuration of the surface. I could see rocks and craters through this blowing dust. It was my intention to try and pick up a landing spot prior to the 100-foot mark and then pick out an area just beyond it such that I could keep my eyes on that all the way down through the descent and final touchdown. I wouldn't, in fact, be looking at the place (where) I was going to land; I would be looking at a place just (out) in front of it. That worked pretty well, but I was surprised that I had as much trouble as I did in determining translational velocities. I don't think I did a very good job of flying the vehicle smoothly in that period of time. I felt I was a little bit erratic."]
Dutchguy

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12/17/2012 06:59 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
It´s funny that while the astronauts always are pictured in broad daylight, the surroundings often seems like evening or nighttime. That 'Sun' should spread its light equally in all directions?
 Quoting: Swedish Coward 26542361

There's no air to scatter the light.
All there is is direct sunlight and reflected sunlight.

It's an alien environment. Things behave and look different than your common experience tells you things should.


I have a question. How is the temperature on the moon's surface changing (during day and night), if there's no atmosphere and it stays in pure vacuum?
 Quoting: zvezda 1

Heat energy can be transported by electro-magnetic radiation, and conduction: it is transferred to matter the object actually touches.
Convection is a special case of conduction that occurs in liquids and gasses.

The surface is heated up by sunlight. At right angle with the Sun that would be about 1.4 kW of solar energy per square metre.
It loses its heat by radiating infra-red into space (everything that has a temperature radiates) and by conducting it to the lower cooler layers.

If the surface gets more energy from the Sun than it loses it warms up, if it gets less energy from the Sun than it loses (like at night) it cools down.

Thermodynamics 101.

What Earth's atmosphere does is transport energy around and reduce how fast heat is radiated into space.
It works like a blanket, so to speak.* Without it average temps would be lower.
Heat loss is of course not completely eliminated, Earth would be a molten blob if that were the case.
It still gets cold during the night.
book

*The atmosphere is less transparent for the wavelengths in which the Earth radiates than for the wavelengths the Sun's radiation is strongest.
This causes the so called Greenhouse Effect.

(For basic science Wikipedia is actually a good starting point.)
 Quoting: Halcyon Dayz, FCD


Complete and utter BULLSHIT, read my previous comment and you will understand this photo.!!! What you bring up is a load of imaginary hogwash.
"If History is thought with oppression, war and genocide, then how else would the future be?"

"How can one learn positive if one only gets preached negative!."
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Re: LOVE THIS MOON PHOTO BECAUSE ...
where is the crater under the lander.
 Quoting: geerod

there shouldn't be one. The rocket was throtlled down for landing and the overal pressure of the exhaust was close to 1 PSI. Also, they usually cut off the engine a few feet above the ground. There is however some scouring of the surface dust and that is visible in photographs.

the rocket exhaust should have left a crater under it NO?
 Quoting: geerod

no.

also no moon dust covering the nice clean aluminum covered landing pods.hum????????????
 Quoting: geerod


Why should there be? First, it isn't true that there is no dust. There is some and that can be seen in some photos. There isn't much though because the rocket and dust were in a vacuum. And dust kicked up wasn't suspended in the air like it would be on Earth. It doesn't hang around like we see when dust clouds up here on Earth. It falls quickly. The rocket exhaust carried it quickly away from the landing site so very little landed on the pads. Also, again, the rocket was usually turned off a few feet before touch down meaning even less chance for any dust to hit the pads.
 Quoting: Weasel_Turbine


^This x10000!
 Quoting: Dr. Astro

derp x10000
[link to www.hq.nasa.gov]
102:45:17 Aldrin: 40 feet, down 2 1/2. Picking up some dust.

[Armstrong, from the 1969 Technical Debrief - "I first noticed that we were, in fact, disturbing the dust on the surface when we were something less than 100 feet; we were beginning to get a transparent sheet of moving dust that obscured visibility a little bit. As we got lower, the visibility continued to decrease. I don't think that the (visual) altitude determination was severely hurt by this blowing dust; but the thing that was confusing to me was that it was hard to pick out what your lateral and downrange velocities were, because you were seeing a lot of moving dust that you had to look through to pick up the stationary rocks and base your translational velocity decisions on that. I found that to be quite difficult. I spent more time trying to arrest translational velocity than I thought would be necessary."]
 Quoting: Anonymous Coward 29949639

Has nothing to do with what weasel was talking about. He was talking about dust on the tops of the footpads. It didn't billow and come to rest on the foot pads the way it would if there were an atmosphere.
astrobanner2
zvezda 1

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12/17/2012 07:03 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
Dr. Astro, did you just give me a bad karma?
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12/17/2012 07:05 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
...

there shouldn't be one. The rocket was throtlled down for landing and the overal pressure of the exhaust was close to 1 PSI. Also, they usually cut off the engine a few feet above the ground. There is however some scouring of the surface dust and that is visible in photographs.

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no.

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Why should there be? First, it isn't true that there is no dust. There is some and that can be seen in some photos. There isn't much though because the rocket and dust were in a vacuum. And dust kicked up wasn't suspended in the air like it would be on Earth. It doesn't hang around like we see when dust clouds up here on Earth. It falls quickly. The rocket exhaust carried it quickly away from the landing site so very little landed on the pads. Also, again, the rocket was usually turned off a few feet before touch down meaning even less chance for any dust to hit the pads.
 Quoting: Weasel_Turbine


^This x10000!
 Quoting: Dr. Astro

derp x10000
[link to www.hq.nasa.gov]
102:45:17 Aldrin: 40 feet, down 2 1/2. Picking up some dust.

[Armstrong, from the 1969 Technical Debrief - "I first noticed that we were, in fact, disturbing the dust on the surface when we were something less than 100 feet; we were beginning to get a transparent sheet of moving dust that obscured visibility a little bit. As we got lower, the visibility continued to decrease. I don't think that the (visual) altitude determination was severely hurt by this blowing dust; but the thing that was confusing to me was that it was hard to pick out what your lateral and downrange velocities were, because you were seeing a lot of moving dust that you had to look through to pick up the stationary rocks and base your translational velocity decisions on that. I found that to be quite difficult. I spent more time trying to arrest translational velocity than I thought would be necessary."]
 Quoting: Anonymous Coward 29949639

Has nothing to do with what weasel was talking about. He was talking about dust on the tops of the footpads. It didn't billow and come to rest on the foot pads the way it would if there were an atmosphere.
 Quoting: Dr. Astro


so it was kicking up dust at 100 feet elevation,
but the magic dust, because there is no atmosphere, fell quickly to the ground,and I'm assuming randomly everywhere except the landers legs.

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12/17/2012 07:19 AM
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Re: LOVE THIS MOON PHOTO BECAUSE ...
where is the crater under the lander.
 Quoting: geerod

there shouldn't be one. The rocket was throtlled down for landing and the overal pressure of the exhaust was close to 1 PSI. Also, they usually cut off the engine a few feet above the ground. There is however some scouring of the surface dust and that is visible in photographs.

the rocket exhaust should have left a crater under it NO?
 Quoting: geerod

no.

also no moon dust covering the nice clean aluminum covered landing pods.hum????????????
 Quoting: geerod


Why should there be? First, it isn't true that there is no dust. There is some and that can be seen in some photos. There isn't much though because the rocket and dust were in a vacuum. And dust kicked up wasn't suspended in the air like it would be on Earth. It doesn't hang around like we see when dust clouds up here on Earth. It falls quickly. The rocket exhaust carried it quickly away from the landing site so very little landed on the pads. Also, again, the rocket was usually turned off a few feet before touch down meaning even less chance for any dust to hit the pads.
 Quoting: Weasel_Turbine


NASA says there was lots of dust, are you saying they are wrong?

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