Which of the following types of data provide evidence that helps us understand the life tracks of low-mass stars?
A. H-R diagrams of open clusters
B. observing a low-mass star over many years
C. H-R diagrams of globular clusters
D. spacecraft observations of the Sun
Answer:C
Which of the following types of data provide evidence that helps us understand the life tracks of low-mass stars?
A. H-R diagrams of open clusters B. observing a low-mass star over many years C. H-R diagrams of globular clusters D. spacecraft observations of the Sun