Heber D. Curtis
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Heber D. Curtis was an American astronomer known for his participation in the 1920 Great Debate. This debate, held at the National Academy of Sciences, centered on two major questions in astronomy: the size of the Milky Way Galaxy and the nature of spiral nebulae.12
Curtis argued that spiral nebulae were distant, independent galaxies, similar in scale to our own Milky Way. He believed our galaxy was relatively small, which allowed him to consider these nebulae as separate entities. While he was correct about the extragalactic nature of spiral nebulae, his assessment of the Milky Way's size was later proven to be too small. The debate highlighted the evolving understanding of the universe's vastness and the existence of numerous galaxies beyond our own.12
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- universeShapley’s contributions
…was arranged between Shapley and Heber D. Curtis to discuss this issue before the National Academy of Sciences in Washington, D.C.
Read More…was arranged between Shapley and Heber D. Curtis to discuss this issue before the National Academy of Sciences in Washington, D.C.
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galaxyThe Shapley-Curtis debate…by Shapley and the aforementioned Heber Curtis, who were recognized as spokesmen for opposite views on the nature of spiral nebulae and the Milky Way Galaxy. This so-called debate has often been cited as an illustration of how revolutionary new concepts are assimilated by science. It is sometimes compared to…
Read More…by Shapley and the aforementioned Heber Curtis, who were recognized as spokesmen for opposite views on the nature of spiral nebulae and the Milky Way Galaxy. This so-called debate has often been cited as an illustration of how revolutionary new concepts are assimilated by science. It is sometimes compared to…
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astronomyGalaxies and the expanding universeBut American astronomer Heber Curtis pointed out that some spirals that can be viewed edge-on obviously contain huge amounts of dust in their “equatorial” planes. One might also expect the Milky Way to have large amounts of dust throughout its plane, which would explain why many dim spirals…
Read MoreBut American astronomer Heber Curtis pointed out that some spirals that can be viewed edge-on obviously contain huge amounts of dust in their “equatorial” planes. One might also expect the Milky Way to have large amounts of dust throughout its plane, which would explain why many dim spirals…
Read More