Homework Answers
The realtionship between star's distance from Earth and parallax angle is given by
D=1/p
where D = distance of star from Earth in parsec
p= parallax angle measured in arc seconds
Here, p= 0.379 arc seconds
D= 1/ 0.379= 2.638 parsecs
Thus, Sirius is 2.638 parsecs away from Earth.
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