Author Question: Georges-Louis de Buffon was the first to propose that the Sun and planets formed when a large vortex ... (Read 36 times)

jman1234 · **on:** Jul 27, 2018

Georges-Louis de Buffon was the first to propose that the Sun and planets formed when a large vortex contracted and condensed.

a. True
b. False
Indicate whether the statement is true or false

Question 2

The luminosity class is assigned to a star by studying the absorption lines in the spectrum of the star.

a. True
b. False
Indicate whether the statement is true or false