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  2. Timeline of discovery of Solar System planets and their moons

    en.wikipedia.org/wiki/Timeline_of_discovery_of...

    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 ...

  3. Discovery and exploration of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Discovery_and_exploration...

    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 ...

  4. Timeline of Solar System exploration - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_Solar_System...

    First probe to another planet; Venus flyby (contact lost before flyby) [17] [18] [19] Vostok 1: ... Timeline of discovery of Solar System planets and their moons;

  5. Timeline of Solar System astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_Solar_System...

    1846 – Johann Galle discovers the eighth planet, Neptune, following the predicted position gave to him by Le Verrier. [138] 1846 – William Lassell discovers Neptune's moon Triton, just seventeen days later of planet's discovery. [141] 1848 – Lassell, William Cranch Bond and George Phillips Bond discover Saturn's moon Hyperion. [142] [143]

  6. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    Eris (38.3–97.5 AU) is the largest known scattered disc object and the most massive known dwarf planet. Eris's discovery contributed to a debate about the definition of a planet because it is 25% more massive than Pluto [219] and about the same diameter. It has one known moon, Dysnomia. Like Pluto, its orbit is highly eccentric, with a ...

  7. Formation and evolution of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Formation_and_evolution_of...

    The outer planets' orbits are chaotic over longer timescales, with a Lyapunov time in the range of 2–230 million years. [105] In all cases, this means that the position of a planet along its orbit ultimately becomes impossible to predict with any certainty (so, for example, the timing of winter and summer becomes uncertain).

  8. 3 newly-discovered nearby planets are a game changer in the ...

    www.aol.com/article/2016/05/02/3-newly...

    An international team of astronomers is calling this one a 'game changer.'

  9. History of astronomy - Wikipedia

    en.wikipedia.org/wiki/History_of_astronomy

    He discovered the four largest moons of Jupiter in 1610, which are now collectively known as the Galilean moons, in his honor. [84] This discovery was the first known observation of satellites orbiting another planet. [84]