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  2. 1801 in science - Wikipedia

    en.wikipedia.org/wiki/1801_in_science

    January 1 – Italian astronomer Giuseppe Piazzi makes the first discovery of an asteroid, Ceres, which is briefly considered to be the eighth planet. [1]July 11 – French astronomer Jean-Louis Pons makes the first of his 37 comet discoveries.

  3. 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 ...

  4. Kepler-90 - Wikipedia

    en.wikipedia.org/wiki/Kepler-90

    The penultimate planet showed transit-timing variations, indicating that it is a real planet as well. [11] On 14 December 2017, NASA and Google announced the discovery of an eighth exoplanet, Kepler-90i, in the Kepler-90 system. The discovery was made using a new machine learning method developed by Google. [12] [13]

  5. HD 156668 b - Wikipedia

    en.wikipedia.org/wiki/HD_156668_b

    HD 156668 b is an extrasolar planet orbiting the star HD 156668 78.5 light-years away in the constellation Hercules.It has a minimum mass of 3.1 Earth masses. At the time of discovery it was the second least massive planet discovered by the radial velocity method after Gliese 581 e, subject to the mass/inclination degeneracy that affects radial velocity measurements. [3]

  6. Kepler-90i - Wikipedia

    en.wikipedia.org/wiki/Kepler-90i

    The exoplanet is the eighth in the star's multiplanetary system. As of December 2017, Kepler-90 is the star hosting the most exoplanets found. Kepler-90i was found with the transit method , in which the dimming effect that a planet causes as it crosses in front of its star is measured, and by a newly utilized computer tool, deep learning , a ...

  7. Alexis Bouvard - Wikipedia

    en.wikipedia.org/wiki/Alexis_Bouvard

    Alexis Bouvard's native farm in Contamines-Montjoie. Alexis Bouvard (French pronunciation: [alɛksi buvaʁ], 27 June 1767 – 7 June 1843) was a French astronomer. [citation needed] He is particularly noted for his careful observations of the irregularities in the motion of Uranus and his hypothesis of the existence of an eighth planet in the Solar System.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Neptune - Wikipedia

    en.wikipedia.org/wiki/Neptune

    From its discovery in 1846 until the discovery of Pluto in 1930, Neptune was the farthest known planet. When Pluto was discovered, it was considered a planet, and Neptune thus became the second-farthest known planet, except for a 20-year period between 1979 and 1999 when Pluto's elliptical orbit brought it closer than Neptune to the Sun, making ...