The Kepler space telescope is searching for extrasolar planets by the transit method.
a. True
b. False
Indicate whether the statement is true or false
Question 2
How did astronomers discover the relationship between spectral type and mass for main sequence stars?
a. by measuring stellar radii with very powerful optical telescopes
b. by measuring stellar radii with very powerful radio telescopes
c. by comparing stars with the same spectral type but different luminosities
d. by using computer models of hydrogen fusion and stellar structure
e. by measuring the masses and spectral types of main-sequence stars in binary systems