The Moon's atmosphere is negligibly thin, essentially vacuum, so its sky is always black, as in the case of Mercury.
The Moon's atmosphere is very thin so its sky is always black, as in the case of Mercury.
The Moon's atmosphere is very thin so its sky is always black, as in the case of Mercury.
Formulieren Sie dies mit einer einfacheren Formulierung um: The Moon's atmosphere is negligibly thin, essentially vacuum, so its sky is always black, as in the case of Mercury. Ausgabe: