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Author Question: How did Tycho's detailed observations of Mars' brightness help show that its orbit could not be ... (Read 73 times)

Medesa

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on: Jul 27, 2018
How did Tycho's detailed observations of Mars' brightness help show that its orbit could not be circular?
 
  What will be an ideal response?

Question 2

What is the approximate luminosity of a main-sequence M star?
 
  A) 106 solar B) 1 solar C) 10 solar D) 0.01 solar


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CourtneyCNorton

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

Tycho noted that at some oppositions, Mars was much brighter than at others, suggesting that Mars must be closer to us when it was brighter.

Answer to Question 2

D


Medesa

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Reply 2 on: Jul 27, 2018
Excellent

cici

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Reply 3 on: Yesterday
Wow, this really help

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