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2007-02-19 07:29:28 · 6 answers · asked by Giggly Giraffe 7 in Science & Mathematics Astronomy & Space

6 answers

Any planet with an axis inclined to its orbit will have some kind of seasons, but some will be more noticeable than others.

Mercury has no atmosphere and an extremely slow revolution, so its days pretty much overwhelm any sense of seasons. It's blistering hot for a few months, then it's insanely cold for a few months.

Venus's atmosphere is so dense and overheated that seasons don't mean anything. Extremely hot and more extremely hot, that's the choice.

Now Mars has seasons we can recognize, even though the temperature range is a little low. Every Martian winter, when the sun gets too low in the sky to provide adequate power, NASA mothballs the rovers, hoping they'll wake up the next spring. One icecap gets large, the other gets smaller, then they switch, just like on Earth.

The gas giants are basically all weather, no countryside, so describing seasons is tricky. But Uranus is tilted 98 degrees. It's sideways. So for about 22 years its equator faces the Sun, then for 22 years one pole faces the Sun, then the equator and the other pole get their turns. Spring and Fall on Uranus is pretty even-tempered but Summer and Winter are poles apart, literally.

Pluto is the rocky version of Uranus, although much colder.

2007-02-19 07:51:25 · answer #1 · answered by skepsis 7 · 0 0

Any planet whose axis of rotation is tilted with respect to the plane of its orbit around the sun will have seasons - and that means all of them. Mars is similar to Earth in many respects, including having an axial tilt nearly the same as ours; the seasons on Mars can be observed by watching the size of its polar caps change during its year (about two Earth years).

The severity of seasons also depends to a greater or smaller degree on how elliptical the planet's orbit is, what its atmosphere (if any, Mercury has none to speak of) is composed of, and whether it's so far away from the sun (Jupiter, Saturn, Uranus, Neptune) that seasons would be difficult or impossible to notice, other than the varying lengths of day and night.

2007-02-19 15:41:56 · answer #2 · answered by hznfrst 6 · 0 0

First it is probably necessary to define "seasons".

Mercury is always furnace hot on the side facing the Sun, and cold on the other side, just as the Moon is. With no atmosphere, though, and an odd period of rotation, we would not use the word "seasons".

Venus is hot as molten lead all over, all the time.

Mars has something like seasons, and the polar icecaps wax and wane. The atmosphere is thin, and it is generally cold, but parts of it are warmer during parts of its "year".

Beyond that, the outer planets Jupiter, Saturn, Uranus and Neptune are gas giants, cold all over, all of the time, Pluto is an icy ball of rock that is similarly practically absolute zero.

2007-02-19 15:40:59 · answer #3 · answered by DinDjinn 7 · 0 0

All our solar system's planets have "seasons" unless they have perfectly circular orbits and their polar axes are perpindicular to their orbital plane. No planet in our solar system is that way, therefore all have "seasons".

2007-02-19 15:36:09 · answer #4 · answered by Anonymous · 0 0

Simple logic all that rotate on an axis.

2007-02-19 15:35:24 · answer #5 · answered by Anonymous · 0 2

Mars does.

2007-02-19 15:33:15 · answer #6 · answered by Randy G 7 · 0 0

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