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The Birth of a Star Kyle K Shane G Mark F. Interstellar Cloud The name given to an accumulation of gas, plasma and dust in our and other galaxies.

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Presentation on theme: "The Birth of a Star Kyle K Shane G Mark F. Interstellar Cloud The name given to an accumulation of gas, plasma and dust in our and other galaxies."— Presentation transcript:

1 The Birth of a Star Kyle K Shane G Mark F

2 Interstellar Cloud The name given to an accumulation of gas, plasma and dust in our and other galaxies.

3 A Collapsing Cloud Fragment One of many fragments in a typical interstellar cloud that contains one or two solar masses of material. This fragment eventually collapses.

4 Fragmentation Ceases The fragment eventually shrinks to the size of a solar system and starts to heat up. This stage is when the fragment starts to look like a star.

5 Protostar 100,000 years into the stars lifecycle it enters stage 4. The protostar continues to shrink. –Its density increases –Its temperature rises

6 Protostellar Evolution In stage 5 the protostar has shrunk to 10 times the size of the sun. Its central temperature is approximately 5,000,000 K.

7 A Newborn Star The central temperature reaches 10,000,000 K which triggers nuclear burning. –This process causes the star to be born.

8 The Main Sequence Over 30,000,000 years the star continues to contract. Its central temperature reaches 15,000,000 K. Stage 7 is about where our sun is now.

9 Works Cited


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