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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 ...
Its orbit revealed that it was a new planet, Uranus, the first ever discovered telescopically. [20] Giuseppe Piazzi discovered Ceres in 1801, a small world between Mars and Jupiter. It was considered another planet, but after subsequent discoveries of other small worlds in the same region, it and the others were eventually reclassified as ...
1959 – Luna 3 sends the first images of another celestial body, the Moon, from space, including its unseen far side. [179] 1962 – Mariner 2 Venus flyby performs the first closeup observations of another planet. [180] 1964 – Mariner 4 spacecraft provides the first detailed images of the surface of Mars. [181]
It was later discovered that in this picture the JWST had also revealed three ancient galaxies that existed shortly after the Big Bang. Its images of these distant galaxies are views of the universe 13.1 billion years ago. [264] [266] [267] On 14 July 2022, NASA presented images of Jupiter and related areas by the JWST, including infrared views ...
New Horizons crossed the orbit of Saturn on June 8, 2008, [115] and Uranus on March 18, 2011. [116] After astronomers announced the discovery of two new moons in the Pluto system, Kerberos and Styx, mission planners started contemplating the possibility of the probe running into unseen debris and dust left over from ancient collisions between ...
Chiron, a moon of Saturn supposedly sighted by Hermann Goldschmidt in 1861 but never observed by anyone else.; Chrysalis, a hypothetical moon of Saturn, named in 2022 by scientists of the Massachusetts Institute of Technology using data from the Cassini–Huygens mission, thought to have been torn apart by Saturn's tidal forces, somewhere between 200 and 100 million years ago, with up to 99% ...
The exploration of Jupiter — the biggest and most extreme planet in the Solar System — may change humanity's understanding of the Solar System.Recent discoveries by the National Aeronautics and Space Administration (NASA) Juno mission uncover what lies beneath Jupiter's violent storms and reveal that Jupiter is more akin to a star than a planet.
The outer planets Jupiter, Saturn, Uranus and Neptune, compared to the inner planets Earth, Venus, Mars, and Mercury at the bottom right The four outer planets, called giant planets or Jovian planets, collectively make up 99% of the mass orbiting the Sun. [ h ] All four giant planets have multiple moons and a ring system, although only Saturn's ...