A star with a parallax angle of 1/20 arcsecond is
A. 20 light-years away.
B. 1/20 parsec away.
C. 20 parsecs away.
D. 10 parsecs away.
Answer:C
A star with a parallax angle of 1/20 arcsecond is
A. 20 light-years away. B. 1/20 parsec away. C. 20 parsecs away. D. 10 parsecs away.