Suppose that you measure the parallax angle for a particular star to be 0.5 arcseconds. The distance to this star is
A) 0.5 light-year.
B) 0.5 parsec.
C) 5 light-years.
D) 5 parsecs.
E) 2 parsecs.
Answer: E
Suppose that you measure the parallax angle for a particular star to be 0.5 arcseconds. The distance to this star is
A) 0.5 light-year.
B) 0.5 parsec.
C) 5 light-years.
D) 5 parsecs.
E) 2 parsecs.
Answer: E