Re: equinox

Herman Miller wrote:
> That's always possible, or (as in the case of another of my planets) the
> only areas of the planet that are warm enough to be habitable may be in the
> tropics. Alternatively, a planet with a closer to 90 degree tilt would have
> radically different seasons.
Almost as interesting as that is a planet I created (tho I didn't get
into much detail) for a conlang that never got very far.  Anyways, it's
an extremely hot desert planet, and its middle-latitudes are too hot for
anything to live.  At one time, however, it was cool enough for
ancestors of the sentient beings who spoke this lang to cross the
equator (a sort of "ice age", so to speak - except that there wasn't any
ice), and when it heated back, both groups retreated to the poles,
creating two distinct species, one near the north pole, and one near the
south pole, who might as well have been on seperate planets, since they
could never communicate.  Given the planet's tilt, almost the entire
habitable zone would have been in the "arctic" and "antarctic" regions.
Yord (my current conplanet), is much more boring.  Other than the three
suns and two moons, there's not much interestingly different about it.
The day's quite a bit longer, 27-1/2 hours IIRC, and the year's a little
longer (tho few rotations, due to the longer day).  Also the tilt's
slightly greater - around 28 degrees, which would probably make for more
extreme seasons.

Another possibility - a planet with a very eccentric orbit, replacing
tilt as the primary cause of seasons, if it's eccentric enough, there
could be migrations from the equatorial regions to the polar regions
over a yearly basis.  Or, a planet with such a long orbit (orbitting a
supergiant, perhaps), that it's "year" is, say, 80 of ours, so that a
person would be lucky to live one year!  Or some science-fiction author
(I don't remember who) based his stories on a planet orbitting a
double-star, the second of which orbitted in a centuries-long orbit
around the primary, getting extremely close at the perstellon and
extremely far at the apstellon, creating "seasons" of centuries in
length.

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