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Author Question: What are the two major ways in which extrasolar planets have been discovered? A) direct imaging ... (Read 25 times)

futuristic

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on: Jul 27, 2018
What are the two major ways in which extrasolar planets have been discovered?
 
  A) direct imaging with large telescopes
  B) measuring changes in the star's brightness when a planet transits
  C) measuring the motion of the star due to the planets' gravitational tugs
  D) A and B
  E) A and C
  F) B and C

Question 2

What will happen in the Sun immediately after it has exhausted its supply of hydrogen in its core?
 
  A) The core will collapse and a supernova will result.
  B) The Sun will turn into a white dwarf and cool off forever.
  C) The helium core will shrink, heat, and start fusing helium to carbon.
  D) The helium core will shrink and heat; a shell of hydrogen will start fusing.


Dominic

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

F

Answer to Question 2

B


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