Moo sack

Moo sack

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Storyboard Description

Meowing hole

Storyboard Text

  • Stellar Nurseries/ Molecular Clouds
  • Every star is born in a stellar nursery.
  • This is the first stage in a star's lifetime.
  • The force of gravity slowly pulls particles together that clump together and the heat from the pressure makes a protostar.
  • The protostar is basically a baby star. This is where a star's journey on an H-R diagram begins.
  • Protostar
  • At the beginning of the main sequence, a star is directly on the main sequence of an H-R diagram.
  • The main sequence is the longest part of a star's lifetime
  • Main Sequence
  • A red giant is formed when a star begins to die because it has used all of the hydrogen in its core.
  • The star will expand to many times its original size. It is called a red giant because their surface will cool down to a red glow.
  • Red Giant
  • The red giant will eventually begin to collapse under the force of gravity. The star will become unstable and start expanding and contracting, shedding its outer layers in the process.
  • The remains of the outer layers form a big cloud of gas and dust called a planetary nebula.
  • Planetary Nebula
  • At the center of the planetary nebula, there is a white dwarf.
  • A white dwarf is basically a core of carbon. This is where a star's trip on an H-R diagram ends.
  • White Dwarf
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