How Gravity Governs Our Solar System

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How Gravity Governs Our Solar System
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• The Eagle nebula All nebulae are interstellar
  clouds of gas and dust.

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• The Boomerang nebula, a cold nebula, is formed
  from slow moving gas molecules. The temperature
  of this nebula is about 1 degree above absolute
  zero!

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• The Spider nebula, a warm nebula, is formed by
  fast moving gas particles.

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• Temperature is a measure of how quickly particles
  in an object move around. The diagram explains
  that cold particles move slowly and warm
  particles move quickly. To see this, CLICK ME!
  Move the bars around to see the different
  effects!

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• Cats eye nebula a stable nebula does not
  collapse in on itself because the force of
  gravity is balanced by the pressure from
  colliding particles.

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• A collapsing nebula surrounding a star will end
  up forming a solar system.

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• This is a collapsing nebula. Here, gravity
  overpowered pressure and is causing the nebula to
  collapse inward. Deep within it, as dust blocks
  out an increasing amount of stellar ultraviolet
  radiation, the cloud becomes darker and colder.

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• Within a solar nebula, when collisions between
  gas and dust occur, the building blocks of
  planets form. Below is a planetary nebula.

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Where is the asteroid belt and why didnt they
form a planet? This diagram shows where the
asteroid belt is located between
Mars and
Jupiter
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• With Jupiter being the second most massive body
  in our solar system, its gravitational pull has
  prevented the asteroids from becoming a planet.
  The suns gravity is pulling them inward, but
  Jupiters gravity is pulling them outward. Thus,
  they cannot come together to form a planet.

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What other effects does gravity have on our solar
system?
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• Comet Hale-Bopp can be seen with two tails one
  is blue, the other is yellowish. The suns
  gravity has more affect on the dust tail than the
  gas tail because the dust tail has more mass.
  This causes the dust tail to curve toward the sun.

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• This diagram shows how the gas tail remains
  straight and the dust tail curves.

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• In 1994, comet Shoemaker-Levy was torn apart by
  Jupiters gravitational pull. The dark areas show
  where the fragments of the comet hit Jupiter.
• Comet Shoemaker-Levy as it was breaking apart

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Comet destroyed in stellar crash (Apr 20, 2004)

• Astronomers in Texas have seen a comet vaporize
  into a cloud of gas as it plunged on to the fiery
  surface of a hot, young star. The comet a
  100km-wide body made of rock and ice was ripped
  apart and destroyed by the heat of the star.

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