I recently
went on a journey through the Cascade mountains. It was a snowy trip. The snow in the mountains was fresh. There is something about fresh snow that looks
different from old snow or late season snow. Why does fresh snow look so
magical? Is it because we are not used to seeing it? I suppose that could be, if it is the
first snow of the season, and you haven’t seen any for almost a year. Or if like
me, you live in an area that rarely gets snow, it will always be novel and
magical. Of course, snow can also bring inconvenience and travel headaches (we
made it through the mountains okay . . . slowly) but I will save that
discussion for another day.
However, fresh
snow has something else going for it. It has a chance to gradually accumulate
on the branches of trees or bushes. Even bare branches can develop a seemingly
impossible stack of snow that balances on the slenderest of shafts. Older snow after it has been around a while, begins to clump up and fall off making for a patchier
appearance, whereas fresh snow makes the foliage look more like a Christmas
cookie that has been professionally frosted.
This got me
thinking about how snow might look on other worlds. Of all the many solid
surface bodies in our solar system, including moons, asteroids, and planets,
not very many of them produce snow. On our world the snow is made of water,
H2O. But on Pluto the snow is made of methane. Mars has two kinds of snow,
water and carbon dioxide. Saturn’s moon Enceladus has geysers that spew liquid
water and ammonia, some of which returns to the surface as snow. Another of
Saturn’s moons, Titan, has clouds of methane that sometimes precipitate as
snow. Io is one of Jupiter’s moons that is constantly stretched and pulled by
the tidal effects of being so close to Jupiter. This causes sulfur geysers to
erupt and some of that sulfur returns to Io as yellow snow (quit snickering). Neptune’s moon
Triton has pink snow that is made of nitrogen and methane. That is about as
much snow that we know of in our solar system.
Of course,
there are potentially billions of planets and moons in our galaxy with probably
billions of variations of conditions. That is too much for the human
imagination to conceive. So, for now I will have to be content to be enchanted
by our fresh snow.
(My novel
Star Liner, is now available in paperback or as an e-book through Amazon and
other online sources)
Star liner
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