Giovanni Battista Donati

Giovanni Battista Donati

Giovanni Battista Donati [IPA: IPA|ʤoˈvanːɪ baˈtista doˈnaːtɪ] (16 December 1826, Pisa, Italy – 20 September 1873, Florence, Italy) was an Italian astronomer.

Donati graduated at the university in his native city Pisa and afterwards he joined the staff of the Observatory of Florence in 1852 and was appointed director in 1864. Donati was the first to obtain and analyze the spectrum of comets. Between 1854 and 1864 he discovered six new comets, including the spectacular Comet Donati (C/1858 L1), found in 1858. He also pioneered spectroscopy of comets to determine their physical composition, discovering that the spectrum changed when a comet approached the Sun and heating caused it to emit its own light rather than reflected sunlight, concluding that the composition of comets is, at least in part, gaseous.

Donati was also a pioneer in the spectroscopic study of the stars and the sun.

Donati died from bubonic plague.

Honors

*Donati crater on the Moon named for him.

External links

* [http://www.daviddarling.info/encyclopedia/D/Donati.html More Info]


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