Astronautics Vocabulary

The Astronautics Vocabulary is a glossary of terms that pertain to the science and technology of spaceflight. This alphabetical list can be navigated by clicking on the letters A-Z displayed on this page.

Definition of twilight

Translation: crépuscule

Definition: An intermediate period of illumination of the sky before sunrise and after sunset; the three forms are civil, nautical and astronomical.

Other Definition: None

Synonym: None