Answer:
2 pc
Explanation:
The parallax angle is the angle of the earth at different times in a year relative to a given closest star.
P = [tex]\frac{1}{d}[/tex]
where p is the parallax angle, d is the distance between the earth and the star
Since p = 0.5 arcsec, then;
d = [tex]\frac{1}{p}[/tex]
= [tex]\frac{1}{0.5}[/tex]
= 2
d = 2 pc
The star is 2 parsec away from the earth.
