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Author Question: Henrietta Leavitt discovered the period-luminosity relationship for ____________________. Fill in ... (Read 66 times)

jessicacav

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on: Jul 27, 2018
Henrietta Leavitt discovered the period-luminosity relationship for ___________________ _.
 
  Fill in the blank(s) with correct word

Question 2

As a star begin to form the initial energy source is from
 
  a. nuclear fusion.
  b. nuclear fission.
  c. gravitational potential energy.
  d. magnetic fields.


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Ksanderson1296

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

Cepheid variables

Answer to Question 2

c


jessicacav

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

chereeb

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Reply 3 on: Yesterday
Excellent

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