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in the earth we have morning and evening or day and night ,but in other lands in the sky do they have the same???

2007-08-27 14:40:30 · 5 answers · asked by bishbish 1 in Science & Mathematics Astronomy & Space

5 answers

If you mean other planets, then the answer is...sometimes.

If the planet rotates on its axis at a different rate than it takes to orbit its star, then there is a sunrise and a sunset on that planet (with of course day and night). In other words, if the planet's "day" is not the same length as its "year".

But if the planet is close enough to its star to be "tidally locked", then it always faces one way to its star (the way the moon is "tidally locked" to the Earth). On a planet like that the sun doesn't move in its sky at all and there is no sunrise or sunset. The daylit side will always be in daylight, the night side will always be night.

2007-08-27 14:49:22 · answer #1 · answered by Anonymous · 0 0

Yes, but not always as clearly as we do.
Earth turns on itself in 24 hours and around the Sun in 365 days. Thus (relative to the stars) we turn on ourselves 366 times for each orbit around the sun.

Mercury turns on itself 3 times for 2 orbits. Each orbit (Mercury's year) is 88 Earth-days. If the "year" began at noon, when the Sun is directly overhead for an observer, then the year would end at "midnight" -- a new year would start at that moment and end when it is noon again. So one Mercury day (noon to noon) lasts two Mercury years.

Venus is covered with very think clouds so that the Sun cannot be seen from its surface. However, if you tried to guess the pattern of day and night from the faint sunlight and the heat that does make it through, you'd find that the Sun rises in the West and sets in the East and that the Venus-days are very long.

Earth is inclined by 23.44 degrees. At temperate latitudes, we see days of 24 hours (noon to noon). However, if you go to latitudes greater than 66.56 degrees (90 - 23.44) there may be "days" when the sun does not set or days when the sun does not rise.

Mars is similar to Earth (days are a tiny bit longer, years are much longer).

Jupiter, Saturn, Uranus and Neptune have no real surface. The part of the atmosphere that we can see and measure seems to rotate at a rate faster than ours (for example, Jupiter's rotation is given as 9h51m).

Uranus has a spin axis inclined at 82.2 degrees and rotates backwards. Near the equator, the sun would seem to rise in the West and set in the East, and cover a wide range of declinations in the sky over its long year (over 84 Earth years).

At latitudes greater than 7.8 degrees (that's a lot of planet!), you'd get periods when the sun never sets and other periods when the sun never rises. The duration of these periods depends on the latitude.

2007-08-27 22:02:10 · answer #2 · answered by Raymond 7 · 1 0

I think you mean other planets. And, the answer is yes. All the planets rotate, but at varying speeds. Jupiter spins around in 10 hours, but Venus' day lasts longer than it's year (It takes 225 days to go about the sun, but it's "day" last 243 days).

2007-08-27 21:54:19 · answer #3 · answered by quantumclaustrophobe 7 · 0 0

THIS QUESTION CAN ONLY BE ANSWERED IF YOU KNOW WEATHER YOU ARE MEASURING BY TIME OR SUNLIGHT SO THIS A 2 PART QUESTION ..OR AT BEST CAN BE ANSWERED BY HYPOTHESIS I THINK THE BEST ANSWER IS:: DAY AND NIGHT ARE THE SAME ALL OVER THE WORLD ..BUT THERE IS JUST MORE ..OR LESS ..LIGHT TO THE DAY

2007-08-27 21:52:44 · answer #4 · answered by beers714 1 · 0 1

There are no other lands known to us.

2007-08-30 22:58:49 · answer #5 · answered by Renaissance Man 5 · 0 0

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