Famous Astronomers' 🎂 Birthdays, April 11, United States

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1 Donald Howard Menzel

Apr 11, 1901

Florence

American astronomer

2 William Wallace Campbell

Apr 11, 1862

Hancock County

American astronomer

[Total 2 People]

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Famous Astronomers' 🎂 Birthdays, April 11, United States

1 Donald Howard Menzel

2 William Wallace Campbell

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