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On this day in 1837 – March 7th – Henry Draper was born.

Henry Draper was a pioneer of astrophotography. Following his early death, his wife Anna donated money to Harvard College Observatory to complete his catalogue of stellar spectra. If you see a deep sky object named with an "HD" prefix, it refers to this catalogue.


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On this day in 2009 – March 7th – NASA launched its exoplanet-hunter Kepler.

During its two missions the space telescope found 2700 confirmed exoplanets and 3000 possibles for further investigation.


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On this day in 1804 – March 8th – American astronomer and telescope maker Alvan Clark was born in Ashfield, Massachusetts.

In 1846 he founded Alvan Clark & Sons, which made astronomical telescopes and instruments. Notably, the company made the lenses for large refracting telescopes at Lick Observatory and Yerkes Observatory.


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On this day in 1564 – March 9th – German pastor and amateur astronomer David Fabricius was born.

Along with his son Johannes, David Fabricius discovered Mira, the first known periodic variable star. They also made the first confirmed observations of sunspots.


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On this day in 1934 – March 9th – Yuri Gagarin was born.

Soviet pilot and cosmonaut Yuri Alekseyevich Gagarin was the first person to orbit the Earth.


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On this day in 1979 – March 9th – astronomer Linda Morabito discovered evidence of volcanic activity on Jupiter's moon Io.

She found the picture of the first active volcano known outside Earth among the images sent back by Voyager 1


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On this day in 1977 – March 10th – rings were discovered around the planet Uranus.

The rings were found by a team of astronomers who were using the occultation by Uranus of star SAO 158687 to study the planet's atmosphere.


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On this day in 1811 – March 11th – French mathematician and astronomer Urbain LeVerrier was born.

LeVerrier's calculations enabled the Berlin Observatory to discover the planet Neptune.


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On this day in 1835 – March 12th – Canadian-American mathematician and astronomer Simon Newcomb was born.

Newcomb made important contributions to international timekeeping and other fields in applied mathematics such as economics and statistics. He was a professor at the United States Naval Observatory and at Johns Hopkins.


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On this day in 1781 – March 13th – William Herschel discovered the planet Uranus.

He was the first person in history to discover a new planet.


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