ENGLISH

Uranus, Neptune, Pluto, and the Outer Solar System

By Linda T. Elkins-Tanton

Book information

Publisher
Facts on File (J)
Year
2010
ISBN
0816077010, 9780816077014
Language
english
Format
PDF
Filesize
20 MB (20928890 bytes)
Series
The Solar System
Edition
Revised
Pages
248\268
Time added
2013-12-17 09:52:06

Description

Unlike all the planets closer to the Sun, known since antiquity, the farthest reaches are the discoveries of the modern world. Uranus was discovered in 1781, Neptune in 1846, Pluto in 1930, the Kuiper belt group of objects in 1992, and though the Oort cloud has been theorized since 1950, its first member was found in 2004. The discovery of the outer planets made such an impression on the minds of mankind that they were immortalized in the names of the newly discovered elements: uranium, neptunium, and plutonium, an astonishingly deadly constituent of atomic bombs.

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