If a star is found by spectroscopic observations to be about 500 ...

[deesands]

If a star is found by spectroscopic observations to be about 500 parsecs distant, its parallax is
 
  A) .2.
  B) .5.
  C) .02.
  D) .002.
  E) .005.

Question 2

Orbital resonances are a characteristic of some extrasolar systems but are not seen in our solar system.
 
  Indicate whether the statement is true or false

[CharlieArnold]

Answer to Question 1

D

Answer to Question 2

TRUE

[deesands]

Thank you!

[CharlieArnold]

Always glad to help...