Reply to thread

Message

<blockquote data-quote="Steverooo" data-source="post: 1925305" data-attributes="member: 9410">What is &quot;it&quot;?&nbsp; Be specific, man!&nbsp; What happens when the moon's atmosphere contacts the GG's?&nbsp; VERY, VERY BAD THINGS!&nbsp; World-killing storms!&nbsp; Friction!&nbsp; The moon falling into your GG!&nbsp; (Not to mention probable poisoning of all life on your moon!)Earth-sized is okay.&nbsp; With a tidally locked world, though, the month and day are the same length... once around the GG is both the month and day.&nbsp; The year is once around the sun...Assuming the GG is about in Earth's orbit (and yes, it is theoretically possible to have a stable gas giant within the life zone - one of the supposed extra-solar planets is supposed to be in just such a position), then the year would be 365.247 or so of OUR days long.&nbsp; The &quot;day&quot; length would depend upon the masses, orbits, etc., of the GG &amp; moon.If you want only two occultations a year, then you either need to make the moon far enough away to NOT be tidally locked, or give it a greatly inclined orbit and keep the tidal locking.Using our Earth as your model, the year would be about 365.25 days long, the month about 28 days, and the DAY also about 28 days long...&nbsp; Two weeks of solid daylight (of varying degrees), followed by two weeks of night...Of course, if the moon's orbit is titled, like Earth's is, then...&nbsp; Like the &quot;Midnight Sun&quot; in Alaska, some locations would see the sun &quot;roll around&quot; the sky, a bit, making the lengths of day and night variable, depending upon your location upon the planet...Earth sees a lot more than two eclipses a year (full or patial) SOMEWHERE upon the planet, most years (IIRC), but it varies.&nbsp; There are many years where there are NONE!&nbsp; So, again, it all depends.Note that, with tidally locked worlds, where the month and day are the same length, that the GG will go through ALL of its phases once per &quot;month-day&quot;!&nbsp; At the &quot;nearside&quot;, the GG will always be directly overhead, but parts of it won't always be visible, just like the &quot;dark of the moon&quot; on Earth!&nbsp; (It will still block out the stars, though!)</blockquote>

[QUOTE="Steverooo, post: 1925305, member: 9410"] What is "it"? Be specific, man! What happens when the moon's atmosphere contacts the GG's? VERY, VERY BAD THINGS! World-killing storms! Friction! The moon falling into your GG! (Not to mention probable poisoning of all life on your moon!) Earth-sized is okay. With a tidally locked world, though, the month and day are the same length... once around the GG is both the month and day. The year is once around the sun... Assuming the GG is about in Earth's orbit (and yes, it is theoretically possible to have a stable gas giant within the life zone - one of the supposed extra-solar planets is supposed to be in just such a position), then the year would be 365.247 or so of OUR days long. The "day" length would depend upon the masses, orbits, etc., of the GG & moon. If you want only two occultations a year, then you either need to make the moon far enough away to NOT be tidally locked, or give it a greatly inclined orbit and keep the tidal locking. Using our Earth as your model, the year would be about 365.25 days long, the month about 28 days, and the DAY also about 28 days long... Two weeks of solid daylight (of varying degrees), followed by two weeks of night... Of course, if the moon's orbit is titled, like Earth's is, then... Like the "Midnight Sun" in Alaska, some locations would see the sun "roll around" the sky, a bit, making the lengths of day and night variable, depending upon your location upon the planet... Earth sees a lot more than two eclipses a year (full or patial) SOMEWHERE upon the planet, most years (IIRC), but it varies. There are many years where there are NONE! So, again, it all depends. Note that, with tidally locked worlds, where the month and day are the same length, that the GG will go through ALL of its phases once per "month-day"! At the "nearside", the GG will always be directly overhead, but parts of it won't always be visible, just like the "dark of the moon" on Earth! (It will still block out the stars, though!) [/QUOTE]

Verification