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Author Question: Why are Earths and super-Earths in the habitable zones of their stars of special interest? What ... (Read 98 times)

kaid0807

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on: Jul 27, 2018
Why are Earths and super-Earths in the habitable zones of their stars of special interest?
 
  What will be an ideal response?

Question 2

What is peculiar about Sirius based on historical records?
 
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lcapri7

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

One of the major motivations for searching for exoplanets has been to find planets that harbor life. Life-as-we-know-it requires liquid water and planets in the habitable zones could have liquid water. Adding that to rocky or terrestrial planets, there is hope that life would have developed the same way on these planets.

Answer to Question 2

Records from 100 B.C. to 200 A.D. indicate that Sirius was red in color; records since that time indicate that Sirius is blue-white. Stellar evolution models do not predict that sort of color change.


kaid0807

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Reply #2 on: Jul 27, 2018
TY


lcapri7

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Reply #3 on: Jul 27, 2018
You're welcome


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