APOD: Moon Phases 2022 (2022 Feb 01)

Comments and questions about the APOD on the main view screen.
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APOD: Moon Phases 2022 (2022 Feb 01)

Post by APOD Robot » Tue Feb 01, 2022 5:05 am

[img]https://apod.nasa.gov/apod/calendar/S_220201.jpg[/img] Moon Phases 2022

Explanation: What will the Moon phase be on your birthday this year? It is hard to predict because the Moon's appearance changes nightly. As the Moon orbits the Earth, the half illuminated by the Sun first becomes increasingly visible, then decreasingly visible. The featured video animates images and altitude data taken by NASA's Moon-orbiting Lunar Reconnaissance Orbiter to show all 12 lunations that appear this year, 2022 -- as seen from Earth's northern (southern) hemisphere. A single lunation describes one full cycle of our Moon, including all of its phases. A full lunation takes about 29.5 days, just under a month (moon-th). As each lunation progresses, sunlight reflects from the Moon at different angles, and so illuminates different features differently. During all of this, of course, the Moon always keeps the same face toward the Earth. What is less apparent night-to-night is that the Moon's apparent size changes slightly, and that a slight wobble called a libration occurs as the Moon progresses along its elliptical orbit.

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jks
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Re: APOD: Moon Phases 2022 (2022 Feb 01)

Post by jks » Tue Feb 01, 2022 5:30 am

Nice, and the 4 eclipses (2 partial solar, 2 total lunar) can be predicted by looking at the subsolar N-S angle (must be close to 0 degrees) at new and full moon, right?

DL MARTIN

Re: APOD: Moon Phases 2022 (2022 Feb 01)

Post by DL MARTIN » Tue Feb 01, 2022 8:36 am

When I turned on the APOD I noticed the (MUSIC) addendum. It brought to mind Nietzsche's quote, "Life without music would be a mistake". Thanks.

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Re: APOD: Moon Phases 2022 (2022 Feb 01)

Post by XgeoX » Tue Feb 01, 2022 10:27 am

DL MARTIN wrote: Tue Feb 01, 2022 8:36 am When I turned on the APOD I noticed the (MUSIC) addendum. It brought to mind Nietzsche's quote, "Life without music would be a mistake". Thanks.
When you listen to the music the music listens to you!

Eric
Ego vigilate
Ego audire

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orin stepanek
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Re: APOD: Moon Phases 2022 (2022 Feb 01)

Post by orin stepanek » Tue Feb 01, 2022 1:58 pm

TerminatorMoon_Zia_960.jpg
I like this peaceful view of Luna
cognition2.jpg
This guy's gonna find out! :lol2:
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Re: APOD: Moon Phases 2022 (2022 Feb 01)

Post by neufer » Tue Feb 01, 2022 4:53 pm

Click to play embedded YouTube video.
Art Neuendorffer

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Re: APOD: Moon Phases 2022 (2022 Feb 01)

Post by johnnydeep » Tue Feb 01, 2022 10:14 pm

Quite hypnotic to watch. Really let's you appreciate the libration and size fluctuations. What a complex pas de deux the Earth and Moon have! Though in this case, both are female: Mother Earth and her daughter Selene/Luna!
--
"To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."

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Re: APOD: Moon Phases 2022 (2022 Feb 01)

Post by neufer » Wed Feb 02, 2022 2:23 am


johnnydeep wrote: Tue Feb 01, 2022 10:14 pm
Quite hypnotic to watch. Really let's you appreciate the libration and size fluctuations. What a complex pas de deux the Earth and Moon have! Though in this case, both are female:

Mother Earth and her daughter Selene/Luna!
A ménage à trois with the male Sun.

(Which is the real reason why Webb shades
itself with 5 layers of aluminized Kapton.)
Art Neuendorffer

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Re: APOD: Moon Phases 2022 (2022 Feb 01)

Post by johnnydeep » Wed Feb 02, 2022 3:24 pm

neufer wrote: Wed Feb 02, 2022 2:23 am

johnnydeep wrote: Tue Feb 01, 2022 10:14 pm
Quite hypnotic to watch. Really let's you appreciate the libration and size fluctuations. What a complex pas de deux the Earth and Moon have! Though in this case, both are female:

Mother Earth and her daughter Selene/Luna!
A ménage à trois with the male Sun.

(Which is the real reason why Webb shades
itself with 5 layers of aluminized Kapton.)
Hush! The other planets might get jealous.
--
"To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."