APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19)

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APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19)

Postby APOD Robot » Mon Aug 19, 2013 4:07 am

Image Noctilucent Clouds and Aurora Over Scotland

Explanation: Why would the sky still glow after sunset? Besides stars and the band of our Milky Way galaxy, the sky might glow because it contains either noctilucent clouds or aurora. Rare individually, both are visible in the above time lapse movie taken over Caithness, Scotland, UK taken during a single night earlier this month. First noted in 1885, many noctilucent clouds are known to correlate with atmospheric meteor trails, although details and the origins of others remain a topic of research. These meandering bright filaments of sunlight-reflecting ice crystals are the highest clouds in the Earth's atmosphere. The above video captures not only a variety of noctilucent clouds, but also how their structure varies over minutes. Lower clouds typically appear dark or fast moving. About halfway through the video the clouds are joined by aurora. At times, low clouds, noctilucent clouds, and aurora are all visible simultaneously, each doing their own separate dance, and once -- see if you can find it -- even with the Big Dipper rotating across the background.

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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Beyond » Mon Aug 19, 2013 4:14 am

That was very nice. Very nice indeed!!
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Confused » Mon Aug 19, 2013 5:13 am

I am often unable to see the APOD. For this one, all I get is nothing in the space where the video should be. I normally use Internet Explorer 10 but since it does not work for this I tried Seamonkey (Firefox) and it shows something about upgrading Flash but I have been unsuccessful at figuring out what to do about that.

So then I tried Opera and Safari. They both work; I could see the video in paused mode using Opera and I played the video using Safari. I assume Opera would play it too for me but I did not try.

So if someone says they cannot see the video then suggest that they try a different browser.

As for the video, it is interesting but the audio has nothing to do with the video.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby firstmagnitude » Mon Aug 19, 2013 5:18 am

The music was irritating. These type of videos use a cookie-cutter approach in music - boring!
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby gorade » Mon Aug 19, 2013 5:40 am

Yeah. those tec savvy are recommended to turn the sound OFF
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Markus Schwarz » Mon Aug 19, 2013 7:41 am

Hello,

does anyone know what the four red dots are that appear in the lower right from 2:15 to 2:29?
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Uwe » Mon Aug 19, 2013 8:56 am

Wonderful Pictures, Thanks very much!
(Almost immediately switched off the tacky soundtrack. No need here to go for an Academy Award ^^.
Would have been grateful for some original wind noises, though)
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Case » Mon Aug 19, 2013 10:01 am

Markus Schwarz wrote:Does anyone know what the four red dots are that appear in the lower right from 2:15 to 2:29?

It looks like a transmitting station for tv and/or radio. It could be the Rumster Forest transmitting station (58.328056,-3.371389); that is in the Caithness, Scotland region. It has a 229.2 metres (752 ft) high mast.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby mjimih » Mon Aug 19, 2013 11:19 am

The Earth never ceases to amaze me. No matter where or when we look, it's beautiful.
Aliens will find Earth absolutely amazingly beautiful and fragile to behold. But if they get close enough, they'll see 7,000,000,000 of us and think "Uh oh, that's a lot for such a small planet. Wonder if we should help?"
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby orin stepanek » Mon Aug 19, 2013 11:32 am

Nice video! A+ 8-) :D :thumb_up: :thumb_up: :clap: :yes: :yes:
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Why would the sky still glow after sunset?

Postby neufer » Mon Aug 19, 2013 11:41 am

Click to play embedded YouTube video.




Brigadoon's minister, disturbed by the evil influence of the outside world, prayed "to make Brigadoon an' all the people in it vanish into the Highland mist. Vanish, but not for always. It would return jus' as it was for one day every hundred years. The people would go on leadin' customary lives; but each day when they awakened it would be a hundred years later."
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby zbvhs » Mon Aug 19, 2013 1:32 pm

Since Ursa Major is visible, at least in the one segment, the view is to the North at a local time of about 2 AM and we're seeing Sunrise, as it were, from sunlight coming over the North Pole. Interesting.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby neufer » Mon Aug 19, 2013 3:46 pm

Image
zbvhs wrote:
Since Ursa Major is visible, at least in the one segment, the view
is to the North at a local time of about 2 AM and we're seeing
Sunrise, as it were, from sunlight coming over the North Pole.

    Nautical dawn, as it were, from sunlight coming over the Barents Sea.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Ron-Astro Pharmacist » Mon Aug 19, 2013 6:04 pm

The people would go on leadin' customary lives; but each day when they awakened it would be a hundred years later."


AKA - The "Anti-Groundhog Day" Effect. Where did the century go?
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Boomer12k » Mon Aug 19, 2013 6:27 pm

Totally AMAZING!!!!! A double treat. :D :D :D

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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Liz S. » Mon Aug 19, 2013 7:40 pm

WOW! That's all I could say while watching this. It's amazing... breathtaking scenes of the sky that I will never be able to see where I live in SouthEast Texas. Love the APOD site.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby neufer » Mon Aug 19, 2013 9:29 pm

Liz S. wrote:
It's amazing... breathtaking scenes of the sky that I will never be able to see where I live in SouthEast Texas.

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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby KateLR » Mon Aug 19, 2013 9:40 pm

Why does clicking on the words "Find it" in the paragraph below the video take one to a picture of a cat with its head in a green glass container?
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby geckzilla » Mon Aug 19, 2013 10:27 pm

KateLR: I may be mistaken, but I think the APOD editors might simply like cats.
Just call me "geck" because "zilla" is like a last name.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Beyond » Mon Aug 19, 2013 10:51 pm

I think that may be the 'official' "find it" puddy tat. It pops in now and then. :D
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby neufer » Mon Aug 19, 2013 11:11 pm

KateLR wrote:
Why does clicking on the words "Find it" in the paragraph below the video take one to a picture of a cat with its head in a green glass container?

I never know whether I should put any effort into deciphering APOD's more puzzling links or not. Chances are it's just going to somehow come back to cat videos which I am absolutely sure I am uninterested in. It's just too cutesy for me.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Beyond » Tue Aug 20, 2013 12:28 am

Too cutesy :?: :?: Maru would be disappointed. :yes:
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Borc » Tue Aug 20, 2013 4:02 am

Uwe wrote:Wonderful Pictures, Thanks very much!
(Almost immediately switched off the tacky soundtrack. No need here to go for an Academy Award ^^.
Would have been grateful for some original wind noises, though)

5$ says if you wanted to pay an original composer and orchestra the videographer would be happy to accept your gift. ;)

Beautiful movie.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby Borc » Tue Aug 20, 2013 4:04 am

KateLR wrote:Why does clicking on the words "Find it" in the paragraph below the video take one to a picture of a cat with its head in a green glass container?


Because science.
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Re: APOD: Noctilucent Clouds and Aurora Over... (2013 Aug 19

Postby geckzilla » Tue Aug 20, 2013 6:17 am

neufer wrote:I never know whether I should put any effort into deciphering APOD's more puzzling links or not. Chances are it's just going to somehow come back to cat videos which I am absolutely sure I am uninterested in. It's just too cutesy for me.


Having fun at my expense? I have a tiny violin to play and I'm not afraid to play it! :cry:
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