Harold Reitsema

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Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

12 Novels Considered the “Greatest Book Ever Written”

Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics

10 Greatest Baseball Players of All Time

New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.

Why Is It Called Black Friday?

Rural Irish landscape, Sligo, Ireland.

Why Is Ireland Two Countries?

Santa Claus flying in his sleigh, christmas, reindeer

Was Santa Claus a Real Person?

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

Mona Lisa, oil on wood panel by Leonardo da Vinci, c. 1503-06; in the Louvre, Paris, France. 77 x 53 cm.

Why Is the Mona Lisa So Famous?

Harold Reitsema

American astronomer

Learn about this topic in these articles:

study of Saturn’s rings

In Saturn: Observations from Earth
…1978 by the American astronomer Harold Reitsema, who used measurements of an eclipse of the moon Iapetus by the rings to improve on normal Earth-based resolution.
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