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  1. Neil deGrasse Tyson | Biography, Books, TV Shows, & Facts

    Oct 3, 2025 · Neil deGrasse Tyson (born October 5, 1958, New York, New York, U.S.) is an American astronomer who popularized science with his books and frequent appearances on …

  2. Maria Mitchell | Biography & Accomplishments | Britannica

    Maria Mitchell (born August 1, 1818, Nantucket, Massachusetts, U.S.—died June 28, 1889, Lynn, Massachusetts) was the first professional woman astronomer in the United States.

  3. Henrietta Swan Leavitt | Biography & Facts | Britannica

    Henrietta Swan Leavitt, American astronomer known for her discovery of the relationship between period and luminosity in Cepheid variables, pulsating stars that vary regularly in brightness in …

  4. Benjamin Banneker | Letter to Jefferson, Clock, Almanac, & Facts ...

    5 days ago · Benjamin Banneker (born November 9, 1731, Banneky farm [now in Oella], Maryland [U.S.]—died October 19? [see Researcher’s Note], 1806, Baltimore, Maryland, U.S.) was a …

  5. Galileo | Biography, Discoveries, Inventions, & Facts | Britannica

    Sep 22, 2025 · Galileo was a natural philosopher, astronomer, and mathematician who made fundamental contributions to the sciences of motion, astronomy, and strength of materials and …

  6. Ptolemy | Accomplishments, Biography, & Facts | Britannica

    Ptolemy was an astronomer, mathematician, and geographer who lived during the 2nd century CE. He is known for his geocentric (Earth-centred) model of the universe.

  7. Gian Domenico Cassini | Italian Astronomer, Discoverer of Jupiter’s ...

    Sep 10, 2025 · Gian Domenico Cassini was an Italian-born French astronomer who, among others, discovered the Cassini Division, the dark gap between the rings A and B of Saturn; he …

  8. William Herschel | Biography, Education, Telescopes, & Facts

    6 days ago · William Herschel, German-born British astronomer, the founder of sidereal astronomy for the systematic observation of the heavens. He discovered the planet Uranus, …

  9. Melbourne | Florida, Map, Population, & Facts | Britannica

    Melbourne, city, Brevard county, east-central Florida, U.S. It lies on the Intracoastal Waterway along the Indian River (a lagoon separated from the Atlantic Ocean by barrier islands), about …

  10. Caroline Herschel | Biography, Discoveries, & Facts | Britannica

    6 days ago · Caroline Herschel, German-born British astronomer who was a pioneer in the field. She made important contributions to the work of her brother Sir William Herschel, and, on her …