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A nebula is made of dust (elements heavier than He and H) and gas (H and He).

Stars are made when nebulae's collapse and hydrogen begins to fuse. 99% of nebula material goes into making the star. The left-over 0.01 of debris creates planets.

Does 99% of nebula material that makes the star only consist of gas (He/H) and the 0.01% is the dust which makes the planets?

Question Clarification:

Are the constituents of the 99% of mass that makes the star and the 0.01% mass that makes the planets the same?

I.e.

  • Does both the 99% and 0.01% compose of mainly He/H and a small portion of metals (meaning the star contains heavier elements like Si and Fe etc before fusion?)
    OR
  • is 99% of the nebula composed of He/H, which collapses to form the star, and 0.01% consists of heavier elements that make the planets?

A nebula is made of dust (elements heavier than He and H) and gas (H and He).

Stars are made when nebulae's collapse and hydrogen begins to fuse. 99% of nebula material goes into making the star. The left-over 0.01 of debris creates planets.

Does 99% of nebula material that makes the star only consist of gas (He/H) and the 0.01% is the dust which makes the planets?

A nebula is made of dust (elements heavier than He and H) and gas (H and He).

Stars are made when nebulae's collapse and hydrogen begins to fuse. 99% of nebula material goes into making the star. The left-over 0.01 of debris creates planets.

Does 99% of nebula material that makes the star only consist of gas (He/H) and the 0.01% is the dust which makes the planets?

Question Clarification:

Are the constituents of the 99% of mass that makes the star and the 0.01% mass that makes the planets the same?

I.e.

  • Does both the 99% and 0.01% compose of mainly He/H and a small portion of metals (meaning the star contains heavier elements like Si and Fe etc before fusion?)
    OR
  • is 99% of the nebula composed of He/H, which collapses to form the star, and 0.01% consists of heavier elements that make the planets?
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G. Gip
G. Gip
  • 161
  • 1
  • 3

Star formation: When a nebula collapses, is it only the gasses that form the star?

A nebula is made of dust (elements heavier than He and H) and gas (H and He).

Stars are made when nebulae's collapse and hydrogen begins to fuse. 99% of nebula material goes into making the star. The left-over 0.01 of debris creates planets.

Does 99% of nebula material that makes the star only consist of gas (He/H) and the 0.01% is the dust which makes the planets?