Quiz 12a

Put first three letters of your last name in big bold capital letters on top right.

If the measured parallex toward the star A is 0.2 arcsec, how far away is the star A from the Sun?

  1. 0.2 pc
  2. 0.5 pc
  3. 1.0 pc
  4. 5.0 pc
  5. There is not enough information.