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15 Cards in this Set
- Front
- Back
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What is Alpha Centauri?
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The nearest star (or star system) besides our sun. It is about 4 light-years away.
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What is the Orion Nebula?
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a star-forming cloud located far outside our solar system
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How big is the Milky Way Galaxy?
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100,000 light-years
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How far away is the Andromeda Galaxy?
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2.5 million light-years
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The distance between the center of the Milky Way Galaxy and our solar system is approximately...
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28,000 light-years
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Extensive Ring Systems
(Jovian or Terrestrial?) |
Jovian
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Small Size
(Jovian or Terrestrial?) |
Terrestrial
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Low Average Density
(Jovian or Terrestrial?) |
Jovian
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Solid Rocky Surface
(Jovian or Terrestrial?) |
Terrestrial
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Located within the inner Solar System
(Jovian or Terrestrial?) |
Terrestrial
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Numerous Orbiting Moons
(Jovian or Terrestrial?) |
Jovian
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Primarily composed of Hydrogen, Helium, and Hydrogen compounds
(Jovian or Terrestrial?) |
Jovian
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Our Moon is about the same size as moons of the other terrestrial planets.
(T/F) |
False
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What does the Nebular Theory describe?
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How the Solar System formed and how it is evolving.
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How did the Solar System form?
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4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the centre, forming the Sun, while the rest flattened into a protoplanetary disc out of which the planets, moons, asteroids, and other small Solar System bodies formed.
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