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Walter Sydney Adams
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Walter Sydney Adams

Walter Sydney Adams (December 20 1876 – May 11 1956) was an American astronomer.

He was born in Syria to missionary parents.

Among other things, he worked on solar spectroscopy and co-discovered a relationship between the relative intensities of certain spectral lines and the absolute magnitude of a star.

He won the Gold Medal of the Royal Astronomical Society in 1917 and the Henry Draper Medal in 1918. He won the Bruce Medal in 1928. He won the Henry Norris Russell Lectureship in 1947.

The asteroid 3145 Walter Adams is named after him.

A crater on Mars is named after him. A crater on the Moon is jointly named after him, John Couch Adams and Charles Hitchcock Adams.

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