astronomy

John Herschel – a Pioneer in Celestial Photography

John Herschel – a Pioneer in Celestial Photography

On March 7, 1792, English polymath, mathematician, astronomer, chemist, inventor, and experimental photographer Sir John Herschel was born. Herschel originated the use of the Julian day system in astronomy and named seven moons of Saturn and four moons of Uranus. He made many contributions to the science of photography, and investigated colour blindness and the chemical power of ultraviolet rays. Overall, he advocated an inductive approach to scientific experiment and theory building,…
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Grote Reber – Pioneer of Radio Astronomy

Grote Reber – Pioneer of Radio Astronomy

On December 22, 1911, American pioneer of radio astronomy Grote Reber was born. He combined his interests in amateur radio and amateur astronomy and became instrumental in investigating and extending Karl Jansky’s [4] pioneering work, who in August 1931 first discovered radio waves emanating from the Milky Way. Reber conducted the first sky survey in the radio frequencies and is considered one of the founding figures of radio astronomy. Born in Wheaton, Illinois, a suburb…
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Pierre Janssen and the Discovery of Helium

Pierre Janssen and the Discovery of Helium

When watching the total eclipse on August 18, 1868 in Madras, British India, French astronomer Pierre Janssen discovered the new chemical element Helium. Janssen also is credited with discovering the gaseous nature of the solar chromosphere. Youth and Education Janssen was born in Paris in 1824. An accident when he was young left him extremely lame and it is for this reason that he was unable to go to school. He studied at…
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