The Period-Luminosity Relation Is Critical in Finding Distances With

Q92: The majority of the mass of the

Q93: The interstellar _ absorbs light from stars

Q94: From Earth, the view of the Milky

Q95: For what type of object is the

Q96: In the Galactic halo, we do NOT

Q98: Based on star counts, 100 years ago

Q99: What is the evidence to support the

Q100: How are Cepheids and RR Lyrae stars

Q101: The gravitational microlensing technique has detected _

Q102: William Herschel's original model for our Galaxy