![]() Astronomical objects may also be visible and can include natural satellites, rings, star systems and nebulas and other planetary system bodies. The atmosphere's density and chemical composition can contribute to differences in colour, opacity (including haze) and the presence of clouds. An extraterrestrial atmosphere, if present, has a large bearing on visible characteristics. 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.Ĭharacteristics of extraterrestrial sky appear to vary substantially due to a number of factors. The only extraterrestrial sky that has been directly observed and photographed by astronauts is that of the Moon. In astronomy, an extraterrestrial sky is a view of outer space from the surface of an astronomical body other than Earth. ![]() Taken by Apollo 8 astronaut William Anders while in lunar orbit, December 24, 1968 ![]() A historic extraterrestrial sky- Earthrise, the Earth viewed from the Moon. ![]()
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