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| [[Special:Contributions/162.158.75.166|162.158.75.166]] 16:38, 6 July 2019 (UTC) | | [[Special:Contributions/162.158.75.166|162.158.75.166]] 16:38, 6 July 2019 (UTC) |
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− | Did anyone else expect to see "Total Eclipse of the Heart" right after "Total Eclipse of the Sea"? No? Ah, my coat, thank you.[[User:Daemonik|Daemonik]] ([[User talk:Daemonik|talk]]) 09:17, 8 July 2019 (UTC)
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− | I refer the honourable gentleman to the answer I gave earlier [[Special:Contributions/162.158.154.67|162.158.154.67]] 20:10, 8 July 2019 (UTC)
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− | I remember there being a blue blood supermoon or some crazy thing like that once a year or so back. Mostly because I dreamed that it was also a falling moon and woke up very worried. --[[Special:Contributions/162.158.58.169|162.158.58.169]] 00:18, 12 July 2019 (UTC)
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− | == Astrology ==
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| I think this is primarily an astrology joke. Astrologers often use astronomical cycles (both real and made up) to "predict" future events or explain historic events. By having enough cycles, they can usually come up with results like "skinny jeans are always popular whenever the happy moon is in Pices and wet Mars is in the same Chinese zodiac as Mercury". | | I think this is primarily an astrology joke. Astrologers often use astronomical cycles (both real and made up) to "predict" future events or explain historic events. By having enough cycles, they can usually come up with results like "skinny jeans are always popular whenever the happy moon is in Pices and wet Mars is in the same Chinese zodiac as Mercury". |
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− | There's also possibly an allusion to Fourier transforms. {{unsigned ip|162.158.92.160|03:14, July 6, 2019}} | + | There's also possibly an allusion to Fourier transforms. |
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− | You know, I kind of expected a joke about periods [[Special:Contributions/172.69.160.146|172.69.160.146]] 01:49, 10 July 2019 (UTC)
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− | I think this is unlikely - the jokes all hinge on cycles of the moon, and don't reference any dates or other celestial bodies in the way astrology does.
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− | [[Special:Contributions/162.158.154.37|162.158.154.37]] 12:33, 8 July 2019 (UTC)
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− | ==Phase x distance and supermoons==
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− | I've been absolutely nerd-sniped by the "Phase x distance" in the bottom diagram. As far as I can figure out, if you multiply phase and distance, you should end up with a new cycle with a period of (29.5 x 27.5) = 811.25 days, which is about 2 years. A supermoon is when a full moon occurs when the Moon is closest to the Earth, so this phase x distance figure is effectively a supermoon detector - that's why supermoons occur at the peaks in Randall's diagram.
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− | But when I looked into supermoons a bit - specifically [https://en.wikipedia.org/wiki/Supermoon#/media/File:Moon_distance_with_full_&_new.png this diagram from Wikipedia] - other sources shows supermoons occurring on a ''yearly'' cycle - we supposedly get them every year. How can that be the case, if the two lunar cycles only synchronize every 2 years? It seems to me like there has to be at least one out of every two years where we get no supermoons at all - ie. the full moon is always coinciding with the moon being furthest away.
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− | I feel like I must have made a mistake or wrong assumption, but I can't figure out what it is. [[User:Hawthorn|Hawthorn]] ([[User talk:Hawthorn|talk]]) 17:15, 6 July 2019 (UTC)
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− | :I figured it out; it turns out that I was simply wrong about how to calculate the length of a combined cycle. This [https://www.desmos.com/calculator/vaj4vapdul graph] shows that the two cycles would coincide every 400 days or so. Still can't figure out what "phase x distance" is meant to represent, though. [[User:Hawthorn|Hawthorn]] ([[User talk:Hawthorn|talk]]) 17:54, 6 July 2019 (UTC)
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− | == Earth/Moon changing size ==
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− | While I do know that the Earth and Moon can technically change size due to accretion of interstellar material, the amount is so negligible that I don't even think it's worth mentioning. I suspect the Earth changes size more from thermal expansion and contraction than from accretion. [[User:Hawthorn|Hawthorn]] ([[User talk:Hawthorn|talk]]) 13:03, 9 July 2019 (UTC)
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− | ==Harvest Moon==
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− | The harvest moon does have some astronomical significance: the time of moon-rise from day to day changes less around the harvest moon than at any other time of the year. [https://en.wikipedia.org/wiki/Full_moon#Harvest_moon Wikipedia] and its [http://calgary.rasc.ca/sunset_moonrise.htm source] say that this allowed harvest work to continue into the night during the days after the full moon without a significant period of darkness between sunset and moon-rise. [[Special:Contributions/172.68.189.85|172.68.189.85]] 05:59, 10 July 2019 (UTC)
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