What term describes the arrangement of three or more celestial bodies in a gravitational system?

In astronomy, a syzygy is a nearly straight-line arraignment of three or more astronomical bodies in a gravitational system. The term is often used in conjunction with the Sun, Earth, and either the Moon or a planet. For example, syzygy occurs during solar and lunar eclipses.

Asked by Vasilii Kulev · Last updated 4 years ago · 2.2K views · SOURCE