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Why Is Our Solar System Flat？
Science is Future
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6 months ago
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Why is our solar system flat?
I know it started as a giant cloud of gas and dust, and gravity pulled the dust together to form our planets. But why don’t they orbit the Sun… all around?
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#science #sciencefacts #technology #howstuffworks #spacefacts
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Transcript
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00:00
Why is our solar system flat?
00:02
Because I know that it started as a giant cloud of gas and dust,
00:05
and then gravity caused the dust to form together into our planets.
00:09
But then why don't they orbit the sun like this?
00:12
Turns out that the key is that the giant cloud of dust was spinning.
00:15
So even though all the individual particles could move any which way,
00:18
they still had an overall rotation.
00:21
And as the particles moved, they'd bump into each other,
00:23
canceling out the up and down motion and clumping together into these larger masses.
00:27
But the laws of physics say that angular momentum is conserved,
00:29
so this clump had to keep rotating.
00:32
So over time, our solar system continues to clump, forming planets,
00:35
and flattening out into this disk shape, which is what we see today.
00:39
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