• How did this transformation from solar nebula to planets take place?
• Why did some planets, like Venus, develop thick, poisonous atmospheres?
• How did the Earth become hospitable to life?

.....Partial answers from previous studies suggest that moons, planets, and even asteroids are significantly different in composition. But without knowing what the original solar nebula was made of, complete answers are not possible. Because it is believed that the outer layers of the Sun are composed of very nearly the same material as the original solar nebula, the opportunity to compare the Sun's composition against known planetary composition data sets may yield significant answers.