Sirius Is a Binary Star, Consisting of Sirius a and Sirius

Q41: The remaining core of a planetary nebula

Q42: The temperature of the Sun's interior is

Q43: The letters LMC refer to the galaxy

Q44: The angular measure in degrees north or

Q45: The fundamental components in the structure of

Q47: The lifetime of a star is determined

Q48: By definition, the universe consists of<br>A) all

Q49: A star of magnitude 1 appears _

Q50: The color of a star reveals its<br>A)

Q51: The Big Dipper is a(n)<br>A) cluster of