An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Any of the various phenomena observable on the Earth that are caused by the influence of the Sun, such as aurora borealis.

→ solar; → terrestrial; → phenomenon.

The point of the surface of a celestial body (including the Earth) at which the Sun is directly overhead at a particular time.

→ sub-; → solar; → point.