Question by T likes A.T: Can consequentlymeone please help me answers all these questions for my science homework?
hey please help me with these questions: Thanks
1. Identify and describe the two types of stellar motion.
2.What pattern did Hertzsprung and Russell identify in a star that is employd today to classify stars?
3. The center strip of the HR Diagram is referred to as what kid of stars?
4. ANd how does the universe cycle itself?
Best answer:
Answer by Crystalmoon
lol I?m taking Astronomy right now 
Well for the HR Diagram, don?t know what you mean by the center strip, nonetheless most stars lie on the Main Sequence. Here?s what I have from notes that our professor posted on the power points:
90% of all stars are main-sequence stars
(of the 90%) 80% are red dwarfs : the most universal type of stars in the sky
9% are white dwarfs
1% are red giants
O- and B- type supergiants are extremely more infrequent: unique about one star in 10,000 falls in this category
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