APOD: Plane Crossing Crescent Moon (2023 Dec 04)

[APOD Robot]

Plane Crossing Crescent Moon

Explanation: No, the Moon is not a bow, and no, it did not shoot out a plane like an arrow. What is pictured is a chance superposition. The plane's contrail would normally appear white, but the large volume of air toward the rising Sun preferentially knocked away blue light, not only making the sky blue, but giving the reflected trail a bright red hue. Far in the distance, well behind the plane, the crescent Moon also appears slightly reddened. Captured early last month from Bolton, UK, the featured image was taken so soon after sunrise that the plane was sunlit from below, as was its contrail. Within minutes, unfortunately, the impromptu sky show ended. The plane moved out of sight. The Moon kept rising but became harder to see through a brightening sky. And the contrail gradually dispersed.

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[MarkEl]

One for future societies to look back at and frown upon, an aeroplane polluting the atmosphere

[Ann]

Plane Crossing Crescent Moon. Image Credit & Copyright: Juned Patel

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A person shooting a bow with an arrow.

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But I really long for an APOD featuring a galaxy, preferably another galaxy than the Milky Way or Andromeda or the LMC or M81 or M82... Please?

Ann

[Rauf]

One for future societies to look back at and frown upon, an aeroplane polluting the atmosphere

Well,

While it is easy to imagine that contrails are just dirty streams of pollutants billowing out of airplanes as they cross the sky, in reality they are mostly ice crystals. Water vapor is already present in the atmosphere, but when the extra vapor from the airplane exhaust rapidly saturates already moist air, the water condenses and freezes into minute ice crystals. In fact, the word contrail is short for “condensation trail.”

[dmp86]

Nice photo, but that's a decrescent moon, or the photo has been mirrored.

[Chris Peterson]

One for future societies to look back at and frown upon, an aeroplane polluting the atmosphere

Well,

While it is easy to imagine that contrails are just dirty streams of pollutants billowing out of airplanes as they cross the sky, in reality they are mostly ice crystals. Water vapor is already present in the atmosphere, but when the extra vapor from the airplane exhaust rapidly saturates already moist air, the water condenses and freezes into minute ice crystals. In fact, the word contrail is short for “condensation trail.”

That is true. But it's also true that there is a lot of invisible CO₂ present in that trail, which is highly polluting, and the water vapor trails themselves are seeding cloud formation and resulting in climatic modifications.

[bystander]

Nice photo, but that's a decrescent moon, or the photo has been mirrored.

The opposite of decrescent is increscent, not crescent. Both are crescent. Decrescent is waning, while increscent is waxing.

[Chris Peterson]

Nice photo, but that's a decrescent moon, or the photo has been mirrored.

A Moon close to new on either side of its phases is still correctly called a cresent moon. Formally, a waning crescent or a waxing crescent. "Decrescent" isn't incorrect, but neither is it common usage.

[JohnD]

Awfully like the SpaceX logo!

Not to mention being just in time for

MAS

[Astronymus]

Awfully like the SpaceX logo!
[]
Not to mention being just in time for
[]

Too far fetched.

More like this

[NateWhilk]

Great shot! It reminds me of this.

Artemis, Fantasia, end of Beethoven pastoral symphony (flipped l-r)

[johnnydeep]

Great shot! It reminds me of this.

Artemis, Fantasia, end of Beethoven pastoral symphony (flipped l-r)
..

Nice image! What's the original source? I can fine many uses of virtually the same image, but not the original source.

EDIT: ok, I guess I found it. It's original Disney art from 1940! See https://d23.com/fantasia-at-80-exploring-beethoven/

[Chris Peterson]

Great shot! It reminds me of this.

Artemis, Fantasia, end of Beethoven pastoral symphony (flipped l-r)
..

Nice image! What's the original source? I can fine many uses of virtually the same image, but not the original source.

Are you aware of https://images.google.com/ ? You can drag any image there and it will find matching and similar ones all across the Internet. This version seems all over, including a few on Disney sites.

[johnnydeep]

Great shot! It reminds me of this.

Artemis, Fantasia, end of Beethoven pastoral symphony (flipped l-r)
..

Nice image! What's the original source? I can fine many uses of virtually the same image, but not the original source.

Are you aware of https://images.google.com/ ? You can drag any image there and it will find matching and similar ones all across the Internet. This version seems all over, including a few on Disney sites.

Yes. I started with a "search for image" right-click menu option on the image in my browser, which I believe uses the google image search. But still, it wasn't clear to me what the original source was. But I since found it as the edit to my post above shows, by googling on "Artemis, Fantasia, end of Beethoven pastoral symphony" - https://d23.com/fantasia-at-80-exploring-beethoven/

[JohnD]

Awfully like the SpaceX logo!
[]
Not to mention being just in time for
[]

Too far fetched.

More like this

Yes, but ... boring!

[VictorBorun]

More like this

The disk of the moon when low above the horizon should be red.
Like when it's a narrow crescent close to the disk of the sun and the sun is low above the horizon.

By the way this APOD failed to say why Crescent Moon is so red here

[johnnydeep]

More like this

The disk of the moon when low above the horizon should be red.
Like when it's a narrow crescent close to the disk of the sun and the sun is low above the horizon.

By the way this APOD failed to say why Crescent Moon is so red here

The text implies that the crescent is reddened for the same reason that the contrail is reddened: both are low on the horizon and the light from them is passing though more air, which preferentially reflects blue light. Is that not correct? Why we don't also see a reddened disk might just be due to the exposure settings used.

[VictorBorun]

More like this

The disk of the moon when low above the horizon should be red.
Like when it's a narrow crescent close to the disk of the sun and the sun is low above the horizon.

By the way this APOD failed to say why Crescent Moon is so red here

The text implies that the crescent is reddened for the same reason that the contrail is reddened: both are low on the horizon and the light from them is passing though more air, which preferentially reflects blue light. Is that not correct? Why we don't also see a reddened disk might just be due to the exposure settings used.

Maybe the writer took for granted that such a narrow crescent must be so close to the sun that a low sun predicts a low moon.
By the way the sky is blue here so the red of the moon prevails after being added to the blue of the sky

[Chris Peterson]

The disk of the moon when low above the horizon should be red.
Like when it's a narrow crescent close to the disk of the sun and the sun is low above the horizon.

By the way this APOD failed to say why Crescent Moon is so red here

The text implies that the crescent is reddened for the same reason that the contrail is reddened: both are low on the horizon and the light from them is passing though more air, which preferentially reflects blue light. Is that not correct? Why we don't also see a reddened disk might just be due to the exposure settings used.

Maybe the writer took for granted that such a narrow crescent must be so close to the sun that a low sun predicts a low moon.
By the way the sky is blue here so the red of the moon prevails after being added to the blue of the sky

Or the fact that the plane is being seen from the side. Or that there are trees in the image. There are no "exposure settings" that could redden the disk!