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William Sjogren
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10 Greatest Baseball Players of All Time
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earthquake. Heavily damaged school in the town of Yingxiu after a major earthquake struck China's Sichuan Province on May 12, 2008.
The 6 Deadliest Earthquakes Since 1950
Los Angeles Police Department wanted flyer on Elizabeth Short, aka the "Black Dahlia," who was brutally murdered in January 1947. The FBI supported the Los Angeles Police Department in the case, including by identifying Short through her fingerprints that
America’s 5 Most Notorious Cold Cases (Including One You May Have Thought Was Already Solved)
Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society
The 10 Greatest Basketball Players of All Time
Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.
10 Famous Artworks by Leonardo da Vinci
Santa Claus flying in his sleigh, christmas, reindeer
Was Santa Claus a Real Person?

William Sjogren

scientist

Learn about this topic in these articles:

mascons

  • GRAIL map of the Moon's gravity field
    In mascon

    NASA scientists Paul Muller and William Sjogren discovered that as the spacecraft passed over certain surface regions, the stronger gravity field caused the craft to dip slightly and speed up. Muller and Sjogren used the Doppler-shifted radio signals of the spacecraft to make the first detailed gravity map of the…

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