Shrinking sun indicates a young sun

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Claim

The sun is shrinking at such a rate that it would disappear completely in 100,000 years. This would make it impossibly large and hot in the distant past if the sun is millions of years old.

Source

Responses

  1. The claimed shrinking of the sun's diameter has not been observed. The sun is in its stable, main sequence stage.
  2. The Sun is a nearly-perfect sphere of gas with a diameter of 1,400,000 km, held together by its own gravity. Its dimensions are at present not static and recent findings have shown that the Sun's diameter is at the present time decreasing about one meter every hour. This decrease may be a long-term oscillation which may be one effect of the long-term stabilization of the Sun's output of energy. It has also been found that every 2h 40min the Sun's surface pulses at a speed of 6 kmh-1. Thus its surface moves in and out to change the diameter by nearly 10 km.
  3. The sun is not shrinking, it is expanding. The sun will expand into a red giant and the outer layers of the sun will eventually reach the earth's orbit in about 4-5 billion years.

External Links

  • Mark Isaak's page for this claim [2]
  • Introduction to the Sun [3]
  • Evolution of the Sun [4]
  • Main Sequence Stars [5]
  • Johansson, Sverker, 1998. The Solar FAQ. [6]
  • Matson, Dave E., 1994. How Good Are Those Young-Earth Arguments? [7]

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