toi
n. C2 Proficiency toi
n. a unit of measurement used in astronomy to describe the distance between two objects in space. It is based on the distance between the Earth and the Sun.
n. a unit of length in astronomy, equal to the distance between the Earth and the Sun. It is the standard unit for measuring distances within the solar system.
The planet is about one toi away from its star.
Astronomers use the toi to calculate the orbital periods of planets in our solar system.
While the toi is the standard unit for planetary distances, larger scales in the galaxy require the light-year or the parsec for more practical measurements.