The __________ of the sun is not visible during a total solar eclipse. (Fill in the blank)

The __________ of the sun is not visible during a total solar eclipse.
 
  Fill in the blank(s) with correct word

Question 2

The masses and diameters of each star in the binary can be determined from ____________________ binaries.
 
  Fill in the blank(s) with correct word

Question 3

A(n) ____________________ eclipse occurs when the moon is at its greatest distance from Earth, and the moon is new.
 
  Fill in the blank(s) with correct word

Question 4

For stars on the main sequence, the luminosity can be estimated by the formula L = ____________________.
 
  Fill in the blank(s) with correct word