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Author Question: What can be said with certainty about a red star and a blue star? A) The red star is closer to ... (Read 77 times)

Wadzanai

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on: Jul 27, 2018
What can be said with certainty about a red star and a blue star?
 
  A) The red star is closer to Earth than the blue star.
  B) The red star is more massive than the blue star.
  C) The blue star has a greater proper motion than the red star.
  D) The blue star is hotter than the red star.
  E) The red star has a greater radial velocity than the blue star.

Question 2

The instability strip shows that not all main-sequence stars are, in fact, stable.
 
  Indicate whether the statement is true or false


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diana chang

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Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

FALSE


Wadzanai

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Reply 2 on: Jul 27, 2018
Excellent

deja

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Reply 3 on: Yesterday
Wow, this really help

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