The Earth's axial tilt is probably a product of the original collisions among proto-planets (or "planetesimals") in the primordial Solar System that led to the formation of the planets as we know them today. The collisions were violent and involved lots of energy and changes in the orientations of objects. In particular, the Giant Impactor theory suggests that one such collision blasted material away from the Earth that then became the Moon. The Moon's presence helps stabilize the Earth's axial tilt, which only varies a little bit in a 41,000 year cycle. Mars' tilt, for example, varies much more.
2006-09-01 04:08:41
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answer #1
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answered by DavidK93 7
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collisions as the solar system formed
without any collisions, you would pretty much expect that as a cloud would concentrate into planets, the planets would end up with an axis of rotation parallel to that of the original cloud, and thus perpendicular to the main plane of the cloud.
Mercury has a tilt very close to 0 degrees, Venus has a tilt of just 2.6 degrees, the Earth's varies between 22 and 24.5 degrees, Mars' tilt is 25.2 degrees, Jupiter's is just 3.1 degrees, Saturn's is 26.7 degrees, Uranus' is a huge 97.8 i.e. the axis pretty much points towards the sun, and Neptune's is 28.3 degrees.
So it looks like most, but not all, planets suffered from enough sizeable collisions during their formation, to have at least some tilt.
Maybe mercury and Venus got lucky because they were closer to the sun which prevented large blocks from existing for long enough a time to be able to collide with them. Jupiter was too heavy to suffer much from collisions. And Uranus must have taken some huge hits.
At the end of the day, without a tilt we wouldn't have seasons, and seasons are fun aren't they? (No to mention Uranus where one side has a permanent summer, and the other side, a permanent winter).
Hope this helps
a
2006-09-01 04:14:26
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answer #2
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answered by AntoineBachmann 5
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Early impacts while the Earth was forming gave it it's wobble (the tilt changes over time). Some scientists think that the same large impact that tore the moon from our planet was the primary cause of it's current wobble/tilt.
All of the planets are tilted though (at least somewhat, Mercury isn't very much). While it's likely that early impacts caused most of these, it's hard to imagine what could have thrown a gas giant like Uranus into such a wobble. It is possible that this arose from another cause.
2006-09-01 06:32:27
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answer #3
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answered by iMi 4
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Who said it is tilted? Is it written in any book written by the God means creature of this earth? What has been studied about the earth and conclusions about climates in diff. parts of the earth have helped humanbeing to reach this conclusion that axis of earth is tilted. The tilted situation of the earth could b studied presuming it as untilted. Whatever about the axis has known by u is based on the books in which this conclusion has been mentioned by us only not by the God.
2006-09-04 23:40:14
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answer #4
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answered by SURESH KUMAR C 2
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Because when people started moving to the western hemisphere, the balance of the earth shifted. Plus, as time has progressed, Americans have gotten fatter, so the balance has shifted even more. Eventually, the earth will have flipped over because of all the fat Americans.
2006-09-01 07:31:28
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answer #5
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answered by cheesemonkeyms 1
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A useful video for this question
https://www.youtube.com/watch?v=BQfk__V_3yY
2017-01-28 04:33:11
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answer #6
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answered by V.P. 1
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It was probably caused by this, Billions of years ago, an object about the size of Mars struck Earth. The great amount of debris that resulted from this impact eventually formed itself into our moon.
2006-09-01 13:40:10
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answer #7
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answered by Sean 7
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So we have seasons and the hours of daylight and night change. It keeps things from getting boring that way.
Doug
2006-09-01 04:00:32
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answer #8
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answered by doug_donaghue 7
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Cox I tilted it
2006-09-01 05:24:42
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answer #9
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answered by A 4
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For the seasons and the day and night change.
2006-09-03 06:36:32
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answer #10
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answered by Anonymous
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