How does the Solar Nebula theory explain the formation and orbital properties of planets?
What will be an ideal response?
Question 2
In a very young star cluster, while the most massive stars are swelling up into giants, the least massive stars are
A) collapsing directly to white dwarfs.
B) also evolving off the main sequence as well.
C) blowing off shells as planetary nebula instead.
D) continuing to shine as stable main-sequence stars.
E) still on the zero-age main sequence.