tell me about the moon... it might be a silly question.. but...
17 December 2013, 08:52 PM
#1
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tell me about the moon... it might be a silly question.. but...
how come the moon is lit up/bright?
If we're at night its cus the sun is on the other side of the world.. I get that bit :doh:
so if the earth casts a shadow from the sun.. how come the moon isn't in the same shadow created from the earth's shadow???
Am I being really think?
I just had this brain wave question about it driving home after seeing how brightthe moon looked in a clear sky
If we're at night its cus the sun is on the other side of the world.. I get that bit :doh:
so if the earth casts a shadow from the sun.. how come the moon isn't in the same shadow created from the earth's shadow???
Am I being really think?
I just had this brain wave question about it driving home after seeing how brightthe moon looked in a clear sky
17 December 2013, 09:10 PM
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how come the moon is lit up/bright?
If we're at night its cus the sun is on the other side of the world.. I get that bit :doh:
so if the earth casts a shadow from the sun.. how come the moon isn't in the same shadow created from the earth's shadow???
Am I being really think?
I just had this brain wave question about it driving home after seeing how brightthe moon looked in a clear sky
If we're at night its cus the sun is on the other side of the world.. I get that bit :doh:
so if the earth casts a shadow from the sun.. how come the moon isn't in the same shadow created from the earth's shadow???
Am I being really think?
I just had this brain wave question about it driving home after seeing how brightthe moon looked in a clear sky
That would be a Lunar eclipse I believe.
17 December 2013, 09:13 PM
#4
Scooby Senior
Thread Starter
I know.. why is it not like that all the time then?
lol
lol
17 December 2013, 09:14 PM
#5
Perhaps rather bizarrely, the Moon is actually very dark, and it doesn’t glow for the reasons you might think. The ancients thought that the Moon produced its own light, but we now know definitively that this is not the case. Rather, our Moon reflects the light of the Sun in accordance with its orbit.
The entire Moon does not constantly reflect light – only the half in direct view of the Sun. As the Moon is tidally locked to the Earth (ie we only ever see one face), our view of the lit half changes constantly, ranging from a disc to a thin crescent. On a full Moon, the Sun is directly lined up with the Earth-Moon line; when we see a thin crescent, on the other hand, the Sun is illuminating just the side. However, the Moon does not reflect light quite like a mirror, although it is similar. All objects in space have an albedo, which is a measure of how well they reflect light. To give you an idea of how this works, material like ice has a high albedo, whereas soil has a low albedo.
However, the Moon’s albedo is actually very low – similar to that of coal. Its bright glow is instead the result of something called the opposition effect. You may have come across this when seeing a car’s headlights shine on a dark road: the road appears brighter than it would if light were not incident upon it. The Sun plays the part of the headlight in this case, directly shining on the Moon and leading to its bright glow. The large amount of debris on the surface of the Moon also contributes to its reflectivity.
The entire Moon does not constantly reflect light – only the half in direct view of the Sun. As the Moon is tidally locked to the Earth (ie we only ever see one face), our view of the lit half changes constantly, ranging from a disc to a thin crescent. On a full Moon, the Sun is directly lined up with the Earth-Moon line; when we see a thin crescent, on the other hand, the Sun is illuminating just the side. However, the Moon does not reflect light quite like a mirror, although it is similar. All objects in space have an albedo, which is a measure of how well they reflect light. To give you an idea of how this works, material like ice has a high albedo, whereas soil has a low albedo.
However, the Moon’s albedo is actually very low – similar to that of coal. Its bright glow is instead the result of something called the opposition effect. You may have come across this when seeing a car’s headlights shine on a dark road: the road appears brighter than it would if light were not incident upon it. The Sun plays the part of the headlight in this case, directly shining on the Moon and leading to its bright glow. The large amount of debris on the surface of the Moon also contributes to its reflectivity.
17 December 2013, 09:49 PM
#6
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thank you.. I get it now.
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17 December 2013, 11:02 PM
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18 December 2013, 07:56 AM
#17
Did anyone see the sun set last night at about 4:30? The sun looked incredible and I thought that this thread was actually going to be something relating to the sun. You could stare right at it because it was a very clear orange colour. I don't think I've ever seen it as well as I did last night.
18 December 2013, 08:37 AM
#18
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Did anyone see the sun set last night at about 4:30? The sun looked incredible and I thought that this thread was actually going to be something relating to the sun. You could stare right at it because it was a very clear orange colour. I don't think I've ever seen it as well as I did last night.
18 December 2013, 10:56 AM
#23
Perhaps rather bizarrely, the Moon is actually very dark, and it doesn’t glow for the reasons you might think. The ancients thought that the Moon produced its own light, but we now know definitively that this is not the case. Rather, our Moon reflects the light of the Sun in accordance with its orbit.
The entire Moon does not constantly reflect light – only the half in direct view of the Sun. As the Moon is tidally locked to the Earth (ie we only ever see one face), our view of the lit half changes constantly, ranging from a disc to a thin crescent. On a full Moon, the Sun is directly lined up with the Earth-Moon line; when we see a thin crescent, on the other hand, the Sun is illuminating just the side. However, the Moon does not reflect light quite like a mirror, although it is similar. All objects in space have an albedo, which is a measure of how well they reflect light. To give you an idea of how this works, material like ice has a high albedo, whereas soil has a low albedo.
However, the Moon’s albedo is actually very low – similar to that of coal. Its bright glow is instead the result of something called the opposition effect. You may have come across this when seeing a car’s headlights shine on a dark road: the road appears brighter than it would if light were not incident upon it. The Sun plays the part of the headlight in this case, directly shining on the Moon and leading to its bright glow. The large amount of debris on the surface of the Moon also contributes to its reflectivity.
The entire Moon does not constantly reflect light – only the half in direct view of the Sun. As the Moon is tidally locked to the Earth (ie we only ever see one face), our view of the lit half changes constantly, ranging from a disc to a thin crescent. On a full Moon, the Sun is directly lined up with the Earth-Moon line; when we see a thin crescent, on the other hand, the Sun is illuminating just the side. However, the Moon does not reflect light quite like a mirror, although it is similar. All objects in space have an albedo, which is a measure of how well they reflect light. To give you an idea of how this works, material like ice has a high albedo, whereas soil has a low albedo.
However, the Moon’s albedo is actually very low – similar to that of coal. Its bright glow is instead the result of something called the opposition effect. You may have come across this when seeing a car’s headlights shine on a dark road: the road appears brighter than it would if light were not incident upon it. The Sun plays the part of the headlight in this case, directly shining on the Moon and leading to its bright glow. The large amount of debris on the surface of the Moon also contributes to its reflectivity.
and the "River".
Last edited by The Trooper 1815; 18 December 2013 at 11:00 AM.
18 December 2013, 01:15 PM
#25
Its a very silly space station:
Tractor beam controls put in the most inaccessible position
Keep banging your head on doors
Loads of storm troopers marching round doing what......
You need to move out of the way of a planet before you blow your target up
Very dull grey paint work
and a thermal exhaust port right below the main one......
Tractor beam controls put in the most inaccessible position
Keep banging your head on doors
Loads of storm troopers marching round doing what......
You need to move out of the way of a planet before you blow your target up
Very dull grey paint work
and a thermal exhaust port right below the main one......
18 December 2013, 01:18 PM
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Its a very silly space station:
Tractor beam controls put in the most inaccessible position
Keep banging your head on doors
Loads of storm troopers marching round doing what......
You need to move out of the way of a planet before you blow your target up
Very dull grey paint work
and a thermal exhaust port right below the main one......
Tractor beam controls put in the most inaccessible position
Keep banging your head on doors
Loads of storm troopers marching round doing what......
You need to move out of the way of a planet before you blow your target up
Very dull grey paint work
and a thermal exhaust port right below the main one......
18 December 2013, 07:35 PM
#27
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Did anyone see the sun set last night at about 4:30? The sun looked incredible and I thought that this thread was actually going to be something relating to the sun. You could stare right at it because it was a very clear orange colour. I don't think I've ever seen it as well as I did last night.
Was a stunning sky.
http://i252.photobucket.com/albums/h...ps59ebc08c.jpg
19 December 2013, 12:43 PM
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Its a very silly space station:
Tractor beam controls put in the most inaccessible position
Keep banging your head on doors
Loads of storm troopers marching round doing what......
You need to move out of the way of a planet before you blow your target up
Very dull grey paint work
and a thermal exhaust port right below the main one......
Tractor beam controls put in the most inaccessible position
Keep banging your head on doors
Loads of storm troopers marching round doing what......
You need to move out of the way of a planet before you blow your target up
Very dull grey paint work
and a thermal exhaust port right below the main one......
Well now I'm really disappointed by myself
I genuinely didn't get that reference untill i read Felix's post.
19 December 2013, 01:52 PM
#29
This was the sun setting on Sunday afternoon - I was at the rugby..
Was a stunning sky.
http://i252.photobucket.com/albums/h...ps59ebc08c.jpg
Was a stunning sky.
http://i252.photobucket.com/albums/h...ps59ebc08c.jpg