Bir parsek bir astronomik birimin bir arksaniyelik bir dereceye karşılık geldiği mesafedir.
- One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
Birinin çözümü, ötekinin çözümünü kanıtlayabilir.
- The solution of one may prove to be the solution of the other.
... I was talking to one of my mentors, Dr. Christiane ...
... Believe it or not, this is perhaps one of the most important works ever written by a ...