| Date | Text | |
|---|---|---|
21 Dec 1638
eclipse of the moon |
eclipse of the moon (astronomy) Total eclipse of the moon falls on the same day as the winter solstice, for the first time in the Common Era. |
|
21 Dec 1761
Jean-Louis Pons |
birth Jean-Louis Pons Jean-Louis Pons (died 1831), French astronomer. |
|
21 Dec 1773
Robert Brown |
birth Robert Brown Robert Brown, Scottish botanist (died 1858) |
|
21 Dec 1788
Caroline Herschel |
Caroline Herschel (astronomy) Caroline Herschel discovers the periodic comet 35P/Herschel–Rigollet. |
|
21 Dec 1788
Thomas Southwood Smith |
birth Thomas Southwood Smith Thomas Southwood Smith, English physician and sanitary reformer (died 1861) |
|
21 Dec 1803
Joseph Whitworth |
birth Joseph Whitworth Joseph Whitworth, English mechanical engineer (died 1887) |
|
21 Dec 1821
Samuel Haughton |
birth Samuel Haughton Samuel Haughton (died 1897), Irish scientific polymath. |
|
21 Dec 1824
James Parkinson |
death James Parkinson James Parkinson (born 1755), surgeon. |
|
21 Dec 1846
British |
British (medicine) British surgeon Robert Liston carries out the first operation under anesthesia in Europe. |
|
21 Dec 1862
Karl Kreil |
death Karl Kreil Karl Kreil (born 1798), Austrian astronomer |
|
21 Dec 1872
Challenger expedition |
Challenger expedition (exploration) Challenger expedition: HMS Challenger (1858) sails from Portsmouth in England on the 4-year scientific expedition that lays the foundation for the science of oceanography |
|
21 Dec 1889
Sewall Wright |
birth Sewall Wright Sewall Wright (died 1988), American geneticist. |
|
21 Dec 1890
Hermann Joseph Muller |
birth Hermann Joseph Muller Hermann Joseph Muller (died 1967), American geneticist. |
|
21 Dec 1988
Nikolaas Tinbergen |
death Nikolaas Tinbergen Nikolaas Tinbergen (born 1907), Dutch-born ethologist, ornithologist and Nobel Prize laureate. |
|
21 Dec 1994
Popocatépetl |
Popocatépetl (earth sciences) Mexico's Popocatépetl volcano, dormant for 47 years, resumes eruption. |
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