Talk:3208: SNEWS

2026-02-18T19:05:25Z

2603:7000:6100:F725:5D4:A938:8CD0:F809:

The title text SNEWS is a reference to {{w|SuperNova_Early_Warning_System}}. {{unsigned ip|2a09:bac2:3656:ebe::178:123}} 21:58, 16 February 2026 (UTC)
: No, you're wrong. It stands for Southeast, North East West South, since those are the directions where it can detect them. - [[Special:Contributions/45.178.1.151|45.178.1.151]] 01:41, 17 February 2026 (UTC)

F1RST! also i posted this when there was no explanation. please fix this {{unsigned ip|2605:59c8:22e3:3e14:95a1:c5da:4c49:c384|22:55, 16 February 2026 (UTC)}}

Is this my mediocre non-native English, or should the title text read "setting off fireworks indoors"? (Trivia?) --[[Special:Contributions/2001:A62:5F7:FB01:538E:3F07:C9F0:F0C0|2001:A62:5F7:FB01:538E:3F07:C9F0:F0C0]] 23:06, 16 February 2026 (UTC)
:Yeah, 'setting of fireworks indoors, ...' would mean setting them up (i.e., placing them) and not 'setting off', lighting or detonating the fireworks. [[User:Sameldacamel34|Sameldacamel34]] ([[User talk:Sameldacamel34|talk]]) 23:22, 16 February 2026 (UTC)
:You can talk of setting explosives (the setting of them, as passively ready, to make them ready for later "setting them off"), so I expect the "setting of fireworks" is pretty much the same thing, much as with the setting of an alarm clock.
:Though also sounds like a possible americanism, like "lit it on fire" (c.f. my own prefered "set light to it"), if only because the former seem tautilogical; and/or strangely long-winded, such as with "to burglarize" vs. just "to burgle" (both being what a burglar does upon his burglary). But it's not one of those many funny transatlantic dialect things I've noticed previously, so I could be overexplaining what actually ''is'' merely a typo. [[Special:Contributions/82.132.239.3|82.132.239.3]] 01:33, 17 February 2026 (UTC)
::I could see it as a missing word "setting off of fireworks indoors" seems OK in American to me, though then I'd want a the: "The setting off of fireworks indoors"[[User:Lordpishky|Lord Pishky]] ([[User talk:Lordpishky|talk]]) 05:57, 17 February 2026 (UTC)

It snew [[User:Yaokuan ITB|Yaokuan ITB]] ([[User talk:Yaokuan ITB|talk]]) 23:28, 16 February 2026 (UTC)
:Exactly my thoughts, Yaokuan [[Special:Contributions/216.25.182.141|216.25.182.141]] 23:58, 16 February 2026 (UTC)
:Gesundheit! [[User:Logalex8369|Logalex8369]] ([[User talk:Logalex8369|talk]]) 01:35, 17 February 2026 (UTC)

Sorry, it somehow escaped me when editing the explanation that neutrinos have mass!! (even though we've known about this for decades). Does this mean that if the supernova is far away enough, the photons will arrive before the neutrinos? Or is that threshold too far to matter? [[User:Sameldacamel34|Sameldacamel34]] ([[User talk:Sameldacamel34|talk]]) 01:21, 17 February 2026 (UTC)

: Yes, but the threshold is too far away to have happened yet. Supernova neutrinos have [https://en.wikipedia.org/wiki/Supernova_neutrinos 10^10 to 10^20 MeV]. Judging by the table at the [https://en.wikipedia.org/wiki/Measurements_of_neutrino_speed Overview on neutrino speed], assuming we are about right about the mass of a neutrino, neutrinos that energetic would be traveling within a factor of 10-42 of ''c'', so they would need to have traveled for "a few"×1042 light hours, or a few 1038 years for the photons to catch up. Since the universe is less than 1.4×1010 years old, it'll be another few 1038 years until that happens. [[User:DoSnews|DoSnews]] ([[User talk:DoSnews|talk]]) 03:46, 17 February 2026 (UTC)
::Ah, interesting. And at that distance, the supernova would have to be unimaginably big to even notice/detect? Also, wouldn't it have to be far away enough that it would have traveled for so long the light gets redshifted into oblivion? [[User:Sameldacamel34|Sameldacamel34]] ([[User talk:Sameldacamel34|talk]]) 04:17, 17 February 2026 (UTC)
:::Since SN neutrino detections are tens of neutrinos an increase of even a few times the distances currently detected would render the neutrino pulse undetectable. And the optical event is stretched by time for the photons to migrate to the surface as well as glow from material heated by the explosion and decay heat from ejected material. If we consider only those photons from the explosion "lucky" enough to manage not to hit anything on the way out of the star/remnant they should arrive first by an undetectable time. Also, the explosion itself once triggered has to propagate across millions of miles of the stellar core so the explosion event is at least several seconds long.[[User:Lordpishky|Lord Pishky]] ([[User talk:Lordpishky|talk]]) 05:47, 17 February 2026 (UTC)
::Not 1010–1020, but 10–20. [[Special:Contributions/84.2.109.134|84.2.109.134]] 06:30, 17 February 2026 (UTC)
my first edit in almost 5 months i think lol [[User:Psychoticpotato|P?sych??otic?pot??at???o ]] ([[User talk:Psychoticpotato|talk]]) 01:45, 17 February 2026 (UTC)

One of the firework launchers on the device is aimed directly at the bed. [[User:Xkdvd|Xkdvd]] ([[User talk:Xkdvd|talk]]) 03:06, 17 February 2026 (UTC)
:Is it? Hard to tell in a 2d drawing... --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 07:11, 17 February 2026 (UTC)
::By that logic, its also hard to tell if hairy is pointing at the device or not. [[User:Xkdvd|Xkdvd]] ([[User talk:Xkdvd|talk]]) 23:20, 17 February 2026 (UTC)
::: It's hard to tell if it even ''is'' Hairy, and not a cardboard cutout Ponytail happens to keep around the place. [[Special:Contributions/82.13.184.33|82.13.184.33]] 09:41, 18 February 2026 (UTC)

"Ponytail is showing Hairy her bedroom." is the most hilariously euphemistic explanation of what's going on. [[Special:Contributions/82.13.184.33|82.13.184.33]] 09:24, 17 February 2026 (UTC)

:What is actually going on?[[Special:Contributions/2603:7000:6100:F725:5D4:A938:8CD0:F809|2603:7000:6100:F725:5D4:A938:8CD0:F809]] 19:05, 18 February 2026 (UTC)

Contrary to the current explanation, a foe is *exactly* equal to 10^44 joules, by definition. 1 erg is 10^-7 J and 1 foe is 10^51 erg. Also, I feel there is a [Citation required] somewhere in the section about the dangers of indoor fireworks. (Not happy about having to run Google's Javascript and helping train their image recognition algorithms on unfamiliar foreign street scenes in order to post here.) [[Special:Contributions/78.33.10.10|78.33.10.10]] 11:22, 17 February 2026 (UTC)
:I took it as being that while a foe is exactly that many joules (being a cm/g/s system derivative, not a m/kg/s one), neither a foe nor the equivalent value in joules are exactly the size of that which we might call a 'foe event', for which it was coined. But might have needed rewriting, as with the whole page (loads of little paragraphs and additions to paragaphs, now, at least needs more sensible reordering/grouping of facts and conjectures). [[Special:Contributions/82.132.239.216|82.132.239.216]] 11:58, 17 February 2026 (UTC)

I'll take the slightly disturbing take that Ponytail would rather die than miss a supernova, hence the fireworks [[User:SevenTheGamingKitty|SevenTheGamingKitty]] ([[User talk:SevenTheGamingKitty|talk]]) 19:46, 17 February 2026 (UTC)

The combustion number for sucrose is wrong. Heat of combustion is 1350kCal/mole, mass per mole is 342g, so you'd need about 2.5kg of sugar, not 0.6 grams. [[User:Dkfenger|Dkfenger]] ([[User talk:Dkfenger|talk]]) 21:11, 17 February 2026 (UTC)

I'm half tempted to mention that it ''might'' not be advantageous to go outside and watch a supernova flare up. It ''shouldn't'' be a problem, as none of the likely candidates are anywhere near close enough to us, but I'm thinking of the story setup for The Day Of Triffids... "Hey, everyone, look up there, where there'll suddenly be a bright light!" ''could'' end up to be not ideal. ;) [[Special:Contributions/81.179.199.253|81.179.199.253]] 21:55, 17 February 2026 (UTC)

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Talk:3208: SNEWS