Extraterrestrial sky

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Extraterrestrial sky" – news · newspapers · books · scholar · JSTOR (April 2024) (Learn how and when to remove this message) This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (April 2024) (Learn how and when to remove this message) (Learn how and when to remove this message)

In astronomy, an extraterrestrial sky is a view of outer space from the surface of an astronomical body other than Earth.

The only extraterrestrial sky that has been directly observed and photographed by astronauts is that of the Moon. The skies of Venus, Mars and Titan have been observed by space probes designed to land on the surface and transmit images back to Earth.

Characteristics of extraterrestrial sky appear to vary substantially due to a number of factors. An extraterrestrial atmosphere, if present, has a large bearing on visible characteristics. The atmosphere's density and chemical composition can contribute to differences in colour, opacity (including haze) and the presence of clouds.^[1] Astronomical objects may also be visible and can include natural satellites, rings, star systems and nebulas and other planetary system bodies.