September 23, 2014

This day in history:
On September 23, 1846 student Johann Gottfried Galle, along with Urbain Le Verrier, discovered Neptune. Neptune is a gas giant, insofar as it is not a rocky, terrestrial planet. It is, however, different enough in make up from Saturn that it is in a sub classification known as an ice giant, along with Uranus. It has a core thought to be of molten rock that burns hotter than the surface of the sun, yet its surface temperature is very cold, due to its distance from the sun. As a gas planet there is little distinction between atmosphere and surface, and the bulk of Neptune’s composition is swirling hydrogen and helium gas, with plenty of methane as well. read more

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Encyclopædia Britannica185940
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Thinkexist dictionary115200
Webster's Revised Unabridged Dictionary (1913)109609
Princeton University - WordNet101884
Webdictionary87399
Stedman's medical dictionary67239
English vocabulary word directory48754
Dorland's Medical Dictionary39986
The History Channel - Encyclopedia29131
MWB - Translation dictionary27429
Probert Places of the World23426
Electropedia19509
MedTerms - Medical dictionary16379
FOLDOC - Computing Dictionary14465
Probert People and Peoples Glossary11279
Darling - Encyclopedia of science10036
Acronyms and Initialisms for Health Information Resources9058
Pregnology - Pregnancy & Birth Encyclopedia7345
University of Glasgow - Dictionary of Cell Biology6927
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