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.
Kitaplar birinin aklının ürünleridir.
- Books are the offspring of one's mind.
... and in just one hour, more than 1 3 billion years have already passed. ...
... And even something as simple as you're interested in one book ...