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The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
Saturn is the most distant of the five planets easily visible to the naked eye from Earth, the other four being Mercury, Venus, Mars, and Jupiter. (Uranus, and occasionally 4 Vesta, are visible to the naked eye in dark skies.) Saturn appears to the naked eye in the night sky as a bright, yellowish point of light.
The first successful flyby of Mars was made by Mariner 4 in 1965. Mariner 10 first passed Mercury in 1974. The first probe to explore the outer planets was Pioneer 10, which flew by Jupiter in 1973. Pioneer 11 was the first to visit Saturn, in 1979.
1980 – Voyager 1 flies by Saturn and takes the first images of Titan. [203] However, its atmosphere is opaque to visible light, so its surface remains obscured. 1982 – Venera 13 lands on Venus, sends the first photographs in color of its surface, and records atmospheric wind noises, the first sounds heard from another planet. [204]
In a narrative timeline of Saturn observations, Arthur Francis O'Donel Alexander attributes [147] the first observation of what would come to be called the E Ring to Georges Fournier, who on 5 September 1907 at Mont Revard observed a "luminous zone" "surrounding the outer bright ring." The next year, on 7 October 1908, E. Schaer independently ...
Pioneer 11 image of Saturn.. Saturn was first visited by Pioneer 11 in September 1979. It flew within 20,000 kilometres (12,000 mi) of the top of the planet's cloud layer. Low-resolution images were acquired of the planet and a few of its moons; the resolution of the images was not good enough to discern surface featu
If observed from the vantage point of space, the rings would still be all accounted for. A view of Saturn's rings from NASA's Hubble Space Telescope captured on June 20, 2019.
In 1610, Galileo also observed the planet Saturn, and at first mistook its rings for planets, [64] thinking it was a three-bodied system. When he observed the planet later, Saturn's rings were directly oriented to Earth, causing him to think that two of the bodies had disappeared.