The term "American astronomers" generally refers to astronomers from the United States or those who conduct their research in the U.S. These scientists study celestial objects, including stars, planets, galaxies, and the universe as a whole. American astronomers have made significant contributions to various fields within astronomy and astrophysics. Some notable American astronomers throughout history include: 1. **Edwin Hubble** - Known for Hubble's Law and for establishing the existence of galaxies beyond the Milky Way.
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