i nerd sniped myself tonight and i imagine the NSA operative who is assigned to me is very confused by the increasingly erratic and frustrated google searches for HOW DO I CALCULATE THE MOON WHERE IS THE MOON
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today's extremely basic astronomy question that i'm finding surprisingly difficult to find an answer to: are geographic coordinates and equatorial coordinates the same coordinate system except one is for looking up and the other is for looking down, or is there some essential conversion step needed to correlate them?
i feel like i'm so close to getting this working. i found a simple implementation of ELP2000-85 that gives the approximate ecliptic coordinates and distance of the moon for a given julian century, i found math for translating between ecliptic and equatorial coordinates, and the math for working with the julian calendar looks easy enough, so i just need to figure out the missing conversions and decide on an internal time keeping standard
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i feel like i'm so close to getting this working. i found a simple implementation of ELP2000-85 that gives the approximate ecliptic coordinates and distance of the moon for a given julian century, i found math for translating between ecliptic and equatorial coordinates, and the math for working with the julian calendar looks easy enough, so i just need to figure out the missing conversions and decide on an internal time keeping standard
i think astronomy would be a lot simpler if ancient peoples didn't get so hung up on conceptualizing celestial bodies as spheres and simply invented linear algebra first
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i think astronomy would be a lot simpler if ancient peoples didn't get so hung up on conceptualizing celestial bodies as spheres and simply invented linear algebra first
@aeva On cosmology sequence breaks: Terence Tao noted that an ancient Greek heliocentrist got his arguments shot down because others said, hey, if the earth moves so much yet the stars seem to stay still, the universe would have to be *thousands* of times bigger than anyone figures it is. And how would you know, back then, it was way *more* than thousands of times bigger?
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i think astronomy would be a lot simpler if ancient peoples didn't get so hung up on conceptualizing celestial bodies as spheres and simply invented linear algebra first
@aeva a lot of things would be simpler if cults based on "perfect" shapes hadn't done all the [gestures] that they did
divine geometry is a helluva drug
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@aeva On cosmology sequence breaks: Terence Tao noted that an ancient Greek heliocentrist got his arguments shot down because others said, hey, if the earth moves so much yet the stars seem to stay still, the universe would have to be *thousands* of times bigger than anyone figures it is. And how would you know, back then, it was way *more* than thousands of times bigger?
@rf they were so close lol
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@aeva a lot of things would be simpler if cults based on "perfect" shapes hadn't done all the [gestures] that they did
divine geometry is a helluva drug
@aeva on the other hand getting extremely horny for triangles is both funny and kinda relatable, so
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@aeva a lot of things would be simpler if cults based on "perfect" shapes hadn't done all the [gestures] that they did
divine geometry is a helluva drug
@SnoopJ we're still using spherical trig in astronomy today despite earth being an ellipsoid
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@aeva on the other hand getting extremely horny for triangles is both funny and kinda relatable, so
@SnoopJ mood
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@SnoopJ we're still using spherical trig in astronomy today despite earth being an ellipsoid
@aeva well, yea, because astronomy doesn't really give a shit what shape the earth is anyway
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@aeva well, yea, because astronomy doesn't really give a shit what shape the earth is anyway
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I just want to calculate the current direction of tidal force from the observer's earth-relative position in space and time is that so wrong
@aeva oh what a fun one
have you encountered the thing where every computation in astronomy is coordinate conversion
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@aeva oh what a fun one
have you encountered the thing where every computation in astronomy is coordinate conversion
@ireneista yes
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@ireneista yes
@aeva "fun", isn't it
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i think astronomy would be a lot simpler if ancient peoples didn't get so hung up on conceptualizing celestial bodies as spheres and simply invented linear algebra first
i just want to calculate my current ecliptic coordinates from my current geographic coordinates is that so wrong
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@aeva "fun", isn't it
@ireneista no
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i just want to calculate my current ecliptic coordinates from my current geographic coordinates is that so wrong
i wonder to what extent astronomy is an insomnia friendly career still, or if it's mostly just diurnals looking at spreadsheets in fluorescent offices these days
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i wonder to what extent astronomy is an insomnia friendly career still, or if it's mostly just diurnals looking at spreadsheets in fluorescent offices these days
now that I'm a bit further down this rabbit hole I'm realizing this isn't much different from the terrestrial cartography I did one summer in college about 16 years ago, except that your benchmarks are all moving a lot faster
Gli ultimi otto messaggi ricevuti dalla Federazione
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@natangelom
ma non si fa così.
No, non è niente, non piango, mi è solo entrato un Nat nell'occhio. 💔
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Voglia di uscire meno mille. Voglia di uscire con la pioggia meno infinito e oltre.
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@max infatti ne parla da anni, l'ha usato in più occasioni, mi pare anche in un suo libro, se questo non significa essere promotrice... non l'ha inventato lei come spesso è stato detto ma ne ha promosso l'uso in diverse occasioni fino ad oggi in cui ha fatto un mezzo passo indietro, perché indubbiamente lo schwa ha dei limiti notevoli...
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@gayburg beh l'ha fatto anche quando un difensore della legge ha ammazzato un uomo di colore soffocandolo con il ginocchio sul collo ... ah no ... forse in quel caso non si è indignata ...
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@andreafontana.it immagino la rabbia dei Nepalesi se il governo gli ha bloccato YouTube mentre stavano guardando la partita
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Perché il #trasportoPubblico in Italia non migliora?
Una risposta ariiva da questo articolo di @ambientenonsolo.bsky.social che evidenzia come nel corso degli ultimi 30 anni i finanziamenti hanno cambiato nome tante volte, ma sono sempre diminuiti in termini di spesa reale.
Le conseguenze sulla qualità del servizio sono sotto gli occhi di tutti.
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@liw I don't know, to me they feel like perfectly reasonable computers controlled by hostile alien creatures who take some effort to make them really shitty to use
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Puntata del 13/9/2025
@anarchia
Puntata del 13/9/2025 Mattia 14/09/2025 L’accanimento del governo Meloni sui più vulnerabili è ormai cosa nota e non certo nascosta. L’idea di risolvere le problematiche delle carceri italiane e la drammaticità dei suicidi in cella costruendo nuove carceri, fino all’abominevole...Vedi l'articolo
