Talk:2849: Under the Stars - Revision history

108.162.241.171: request for SR-71 to be mentioned since it used a system that could see stars during the daytime. Figured others who like xkcd would like learning about that.

2023-11-10T20:32:52Z

request for SR-71 to be mentioned since it used a system that could see stars during the daytime. Figured others who like xkcd would like learning about that.

162.158.74.118 at 12:58, 3 November 2023

2023-11-03T12:58:53Z

SomeoneIGuess at 00:59, 3 November 2023

2023-11-03T00:59:12Z

SomeoneIGuess at 00:53, 3 November 2023

2023-11-03T00:53:54Z

172.69.34.49: reply to question

2023-11-02T23:25:33Z

reply to question

MrCandela: idk how to cite a website

2023-11-02T21:48:28Z

idk how to cite a website

172.71.242.140 at 09:12, 2 November 2023

2023-11-02T09:12:07Z

172.70.85.28 at 08:45, 2 November 2023

2023-11-02T08:45:01Z

RAGBRAIvet at 07:29, 2 November 2023

2023-11-02T07:29:35Z

Nitpicking: Declination

2023-11-02T02:30:41Z

Declination

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	Out today just before noon (local time, but of course it doesn't matter much ''which'' local time) I saw in the significantly bright blue sky... <s>a partially built planet-destroying space-station</s> the Moon. Which of course you do. But reminds me of the time when just such a prominent daytime phased-Moon was visible when children were being let out from school and there was this conversation with a supervising member of staff (I forget why, might even have been from "today we learnt about the skies/time!" from the child involved) where we pointed out the Moon up in the bright blue sky and ''he refused to look!''. Not sure if he suspected a practical joke, "didn't want to confuse his pupils" or genuinely was stuck on "only the Sun is up there in daytime". Didn't press the issue, but always worth a laugh about it. Whatever the reason. [[Special:Contributions/162.158.74.118\|162.158.74.118]] 12:58, 3 November 2023 (UTC)		Out today just before noon (local time, but of course it doesn't matter much ''which'' local time) I saw in the significantly bright blue sky... <s>a partially built planet-destroying space-station</s> the Moon. Which of course you do. But reminds me of the time when just such a prominent daytime phased-Moon was visible when children were being let out from school and there was this conversation with a supervising member of staff (I forget why, might even have been from "today we learnt about the skies/time!" from the child involved) where we pointed out the Moon up in the bright blue sky and ''he refused to look!''. Not sure if he suspected a practical joke, "didn't want to confuse his pupils" or genuinely was stuck on "only the Sun is up there in daytime". Didn't press the issue, but always worth a laugh about it. Whatever the reason. [[Special:Contributions/162.158.74.118\|162.158.74.118]] 12:58, 3 November 2023 (UTC)
		+	Anyone want to add in any details for the Astroinertial navigation system (ANS) used by the SR-71 to plot its position during daytime? It located itself based on tracking stars (before GPS).

← Older revision		Revision as of 12:58, 3 November 2023
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	The title text reminds me of what if? 161 [[User:MrCandela\|MrCandela]] ([[User talk:MrCandela\|talk]])		The title text reminds me of what if? 161 [[User:MrCandela\|MrCandela]] ([[User talk:MrCandela\|talk]])
−	: You're thinking of {{w\|Cygnus X-1}}, a similarly named and located but completely ~~different~~ black hole. Cygnus X-1 and V404-Cygni appear to be unrelated to each other, besides being within Cygnus <span style="font-family: 'Comic Sans MS'">[[User:SomeoneIGuess\|someone, i guess]]<sup>([[User talk:SomeoneIGuess\|talk i guess]]\|[[Special:Contributions/SomeoneIGuess\|le edit list]])</sup></span> 00:53, 3 November 2023 (UTC)	+	: You're thinking of {{w\|Cygnus X-1}}, a similarly named and located but completely 0different black hole. Cygnus X-1 and V404-Cygni appear to be unrelated to each other, besides being within Cygnus <span style="font-family: 'Comic Sans MS'">[[User:SomeoneIGuess\|someone, i guess]]<sup>([[User talk:SomeoneIGuess\|talk i guess]]\|[[Special:Contributions/SomeoneIGuess\|le edit list]])</sup></span> 00:53, 3 November 2023 (UTC)
		+
		+	Out today just before noon (local time, but of course it doesn't matter much ''which'' local time) I saw in the significantly bright blue sky... <s>a partially built planet-destroying space-station</s> the Moon. Which of course you do. But reminds me of the time when just such a prominent daytime phased-Moon was visible when children were being let out from school and there was this conversation with a supervising member of staff (I forget why, might even have been from "today we learnt about the skies/time!" from the child involved) where we pointed out the Moon up in the bright blue sky and ''he refused to look!''. Not sure if he suspected a practical joke, "didn't want to confuse his pupils" or genuinely was stuck on "only the Sun is up there in daytime". Didn't press the issue, but always worth a laugh about it. Whatever the reason. [[Special:Contributions/162.158.74.118\|162.158.74.118]] 12:58, 3 November 2023 (UTC)

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 :: I'm thinking he chose it because of its number – V404.  Isn't '404' the internet error code for something that can't be found... something that has figuratively slipped into a black hole somewhere? [[User:RAGBRAIvet|RAGBRAIvet]] ([[User talk:RAGBRAIvet|talk]]) 07:29, 2 November 2023 (UTC)
 :::As I recall, he previously quoted this particular black hole in a prior "passes directly over..." reference, which ''perhaps'' (I can't quite remember how, without searching) tied in with the requirements of that particular comic/article/whatif. And, at some point, you're gonna get yourself a 'favourite' that you'll reference whenever you get a decent chance, right? [[Special:Contributions/172.70.85.28|172.70.85.28]] 08:45, 2 November 2023 (UTC)
 : To quote wikipedia: In 2009, the black hole in the V404 Cygni system became the first black hole to have an accurate parallax measurement for its distance from the Solar System. -- [[User:Hkmaly|Hkmosealy]] ([[User talk:Hkmaly|talk]]) 00:10, 2 November 2023 (UTC)
 :The Earth wobbles quite a bit. How long will it be pointing close enough (I guess within 1 minute of declination) that V404-Cygni will be over that specific line of latitude? [[User:Nitpicking|Nitpicking]] ([[User talk:Nitpicking|talk]]) 02:30, 2 November 2023 (UTC)

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	The title text reminds me of what if? 161 [[User:MrCandela\|MrCandela]] ([[User talk:MrCandela\|talk]])		The title text reminds me of what if? 161 [[User:MrCandela\|MrCandela]] ([[User talk:MrCandela\|talk]])
		+	: You're thinking of {{w\|Cygnus X-1}}, a similarly named and located but completely different black hole. Cygnus X-1 and V404-Cygni appear to be unrelated to each other, besides being within Cygnus <span style="font-family: 'Comic Sans MS'">[[User:SomeoneIGuess\|someone, i guess]]<sup>([[User talk:SomeoneIGuess\|talk i guess]]\|[[Special:Contributions/SomeoneIGuess\|le edit list]])</sup></span> 00:53, 3 November 2023 (UTC)

@@ Line 21: / Line 21: @@
 : To quote wikipedia: In 2009, the black hole in the V404 Cygni system became the first black hole to have an accurate parallax measurement for its distance from the Solar System. -- [[User:Hkmaly|Hkmosealy]] ([[User talk:Hkmaly|talk]]) 00:10, 2 November 2023 (UTC)
 :The Earth wobbles quite a bit. How long will it be pointing close enough (I guess within 1 minute of declination) that V404-Cygni will be over that specific line of latitude? [[User:Nitpicking|Nitpicking]] ([[User talk:Nitpicking|talk]]) 02:30, 2 November 2023 (UTC)
 The title text reminds me of what if? 161 [[User:MrCandela|MrCandela]] ([[User talk:MrCandela|talk]])

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	: To quote wikipedia: In 2009, the black hole in the V404 Cygni system became the first black hole to have an accurate parallax measurement for its distance from the Solar System. -- [[User:Hkmaly\|Hkmosealy]] ([[User talk:Hkmaly\|talk]]) 00:10, 2 November 2023 (UTC)		: To quote wikipedia: In 2009, the black hole in the V404 Cygni system became the first black hole to have an accurate parallax measurement for its distance from the Solar System. -- [[User:Hkmaly\|Hkmosealy]] ([[User talk:Hkmaly\|talk]]) 00:10, 2 November 2023 (UTC)
	:The Earth wobbles quite a bit. How long will it be pointing close enough (I guess within 1 minute of declination) that V404-Cygni will be over that specific line of latitude? [[User:Nitpicking\|Nitpicking]] ([[User talk:Nitpicking\|talk]]) 02:30, 2 November 2023 (UTC)		:The Earth wobbles quite a bit. How long will it be pointing close enough (I guess within 1 minute of declination) that V404-Cygni will be over that specific line of latitude? [[User:Nitpicking\|Nitpicking]] ([[User talk:Nitpicking\|talk]]) 02:30, 2 November 2023 (UTC)
		+
		+	The title text reminds me of what if? 161 [[User:MrCandela\|MrCandela]] ([[User talk:MrCandela\|talk]])

@@ Line 13: / Line 13: @@
 : [[Technically]], it's not in full color, because Cueball and Megan's heads are white, not skin tone <span style="font-family: 'Comic Sans MS'">[[User:SomeoneIGuess|someone, i guess]]<sup>([[User talk:SomeoneIGuess|talk i guess]]&#124;[[Special:Contributions/SomeoneIGuess|le edit list]])</sup></span>  18:48, 1 November 2023 (UTC)
 :: As I was thinking. But I was trying to think of a good word (like "photorealistic", though it isn't quite that) to describe significant arty/colourwashed scenic elements. There are a handful of comics (I think, without trawling through the candidates I have in mind, or look for others) that are so coloured. [[Special:Contributions/172.69.194.194|172.69.194.194]] 19:03, 1 November 2023 (UTC)
 Is there something significant about V404-Cygni? Surely there are enough black holes that there's at least one that passes over every line of latitude. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 19:31, 1 November 2023 (UTC)

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	: My best guess: Randall picked it at random because it's funny. <span style="font-family: 'Comic Sans MS'">[[User:SomeoneIGuess\|someone, i guess]]<sup>([[User talk:SomeoneIGuess\|talk i guess]]\|[[Special:Contributions/SomeoneIGuess\|le edit list]])</sup></span> 23:31, 1 November 2023 (UTC)		: My best guess: Randall picked it at random because it's funny. <span style="font-family: 'Comic Sans MS'">[[User:SomeoneIGuess\|someone, i guess]]<sup>([[User talk:SomeoneIGuess\|talk i guess]]\|[[Special:Contributions/SomeoneIGuess\|le edit list]])</sup></span> 23:31, 1 November 2023 (UTC)
	: To quote wikipedia: In 2009, the black hole in the V404 Cygni system became the first black hole to have an accurate parallax measurement for its distance from the Solar System. -- [[User:Hkmaly\|Hkmaly]] ([[User talk:Hkmaly\|talk]]) 00:10, 2 November 2023 (UTC)		: To quote wikipedia: In 2009, the black hole in the V404 Cygni system became the first black hole to have an accurate parallax measurement for its distance from the Solar System. -- [[User:Hkmaly\|Hkmaly]] ([[User talk:Hkmaly\|talk]]) 00:10, 2 November 2023 (UTC)
		+	:The Earth wobbles quite a bit. How long will it be pointing close enough (I guess within 1 minute of declination) that V404-Cygni will be over that specific line of latitude? [[User:Nitpicking\|Nitpicking]] ([[User talk:Nitpicking\|talk]]) 02:30, 2 November 2023 (UTC)