Astronomers have recently compared the relative abundances of different isotopes of neon found in Moon rocks with those found in the solar wind. What conclusion have they drawn?

Question

Quizplus · Accepted Answer

The comparison of neon isotopes in Moon rocks and the solar wind suggests that the Sun has maintained a more constant temperature over time, contrary to what might have been expected if significant temperature fluctuations had occurred. This stability in temperature is inferred from the consistency in the isotopic composition, as significant changes in the Sun's temperature would likely alter the relative abundances of these isotopes.

Astronomers Have Recently Compared the Relative Abundances of Different Isotopes