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Heber Doust Curtis

    Heber Doust Curtis was an American astronomer whose research focused on solar eclipses and nebulae. His pioneering work in observing the cosmos included the first identification of a polar jet emanating from Messier 87. Curtis significantly advanced our understanding of the universe, notably advocating for the existence of galaxies beyond our own Milky Way. His innovative approaches to astronomical study and observational techniques left a lasting legacy in the field.

    Definitive Determination Of The Orbit Of Comet 1898 I
    The Scale of the Universe
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      Definitive Determination Of The Orbit Of Comet 1898 I