Wikipedia:Main Page history/2010 December 16

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Today's featured article

The dwarf planet Ceres

A dwarf planet is a celestial body orbiting the Sun that is massive enough to be spherical as a result of its own gravity but has not cleared its neighbouring region of planetesimals and is not a satellite. They are smaller than planets, but more massive than small solar system bodies. The term was adopted in 2006 by the International Astronomical Union (IAU) as a result of the increase in discoveries of trans-Neptunian objects that rivaled Pluto in size, and finally precipitated by the discovery of an even more massive object, Eris. The IAU currently recognizes five dwarf planets—Ceres (pictured), Pluto, Haumea, Makemake, and Eris. It is suspected that at least another 40 known objects in the Solar System are dwarf planets, but the number might be as high as 2,000. The 2006 definition has been both praised and criticized, and has been disputed by some scientists. (more...)

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Did you know...

From Wikipedia's newest articles:

Cropped photograph of Philadelphia Athletics slugger Socks Seybold, c. 1902

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  • In the news

  • American diplomat Richard Holbrooke (pictured), chief negotiator of the Dayton Peace Accords, dies at the age of 69.
  • Two bombs explode in Stockholm, Sweden, killing the attacker and injuring two other people.
  • Chinese human rights activist Liu Xiaobo is awarded the 2010 Nobel Peace Prize in absentia, the first time since 1936 that neither the recipient nor a relative attended the presentation ceremony.
  • The SpaceX Dragon, in its first test flight, becomes the first commercially developed spacecraft to successfully return after orbiting the Earth.
  • An original copy of Birds of America by John James Audubon is auctioned for £7.3 million, a record price for the sale of a printed book.
  • On this day...

    December 16: Day of Ashura (Islam, 2010); National Day in Bahrain (1971); Victory Day in Bangladesh (1971); Independence Day in Kazakhstan (1991)

    Andries Pretorius

  • 755An Lushan revolted against Tang Chinese Chancellor Yang Guozhong, initiating the An Shi Rebellion, which lasted eight years before it was put down.
  • 1689 – The Parliament of England adopted the Bill of Rights, declaring that Englishmen possessed certain positive civil and political rights.
  • 1838Great Trek: Over 450 Voortrekkers led by Andries Pretorius (pictured) defeated an estimated 10,000 Zulu at the Battle of Blood River in what is today KwaZulu-Natal, South Africa.
  • 1960 – United Airlines Flight 826 and Trans World Airlines Flight 266 collided in mid-air in heavy clouds over Staten Island, New York City, killing 134 people.
  • 1997 – "Dennō Senshi Porygon", an episode of the Japanese television series Pokémon, induced epileptic seizures in 685 children.
  • More anniversaries: December 15December 16December 17

    Today's featured picture

    Frontispiece to A Memoir of Jane Austen

    The frontispiece to A Memoir of Jane Austen, a biography of the author Jane Austen (1775–1817), written by her nephew James Edward Austen-Leigh and published 52 years after her death. Common to biographies written in the Victorian era, it did not attempt to unreservedly tell the story of the author's life, but instead kept much private information from the public. The Memoir generated popular interest in the works of Jane Austen, which only a literary elite had read up until that point. The art for the frontispiece took some liberties with the original painting, softening Austen's features in the Victorian style.

    Image: James Andrews, after Cassandra Austen
    Restoration: Adam Cuerden/Staxringold

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