二つ星は、共通の重心を中心に軌道を描く二つの星からなる星系です。
Hey, how's everything going with your company?
A binary star is a star system consisting of two stars orbiting around their common center of mass.
He loves her dearly.
Don't have an account? Sign up
Do you have an account? Login
DiQt
Free
★★★★★★★★★★
