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- Astronomer abstract "An astronomer is a scientist who studies celestial bodies such as black holes, moons, planets, stars, nebulae, and galaxies, as well as Gamma-ray bursts and cosmic microwave background radiation. A related but distinct subject, cosmology, is concerned with studying the universe as a whole. An astronomer researches the world beyond earth.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using physical laws. Today, that distinction has mostly disappeared and the terms "astronomer" and "astrophysicist" are interchangeable. Professional astronomers are highly educated individuals who typically have a PhD in physics or astronomy and are employed by research institutions or universities. They spend the majority of their time working on research, although they quite often have other duties such as teaching, building instruments, or aiding in the operation of an observatory. The number of professional astronomers in the United States is actually quite small. The American Astronomical Society, which is the major organization of professional astronomers in North America, has approximately 7,700 members. This number includes scientists from other fields such as physics, geology, and engineering, whose research interests are closely related to astronomy. The International Astronomical Union comprises almost 10,145 members from 70 different countries who are involved in astronomical research at the PhD level and beyond.While there is a relatively low number of professional astronomers,[citation needed] the field is popular among amateurs. Most cities have amateur astronomy clubs that meet on a regular basis and often host star parties. The Astronomical Society of the Pacific is the largest general astronomical society in the world, comprising both professional and amateur astronomers as well as educators from 70 different nations. Like any hobby, most people who think of themselves as amateur astronomers may devote a few hours a month to stargazing and reading the latest developments in research. However, amateurs span the range from so-called "armchair astronomers" to the very ambitious, who own science-grade telescopes and instruments with which they are able to make their own discoveries and assist professional astronomers in research.".
- Astronomer thumbnail JohannesVermeer-TheAstronomer(1668).jpg?width=300.
- Astronomer wikiPageExternalLink www.aas.org.
- Astronomer wikiPageExternalLink www.astrosociety.org.
- Astronomer wikiPageExternalLink www.iau.org.
- Astronomer wikiPageID "580".
- Astronomer wikiPageRevisionID "603026934".
- Astronomer hasPhotoCollection Astronomer.
- Astronomer subject Category:Astronomers.
- Astronomer subject Category:Astronomy.
- Astronomer subject Category:Science_occupations.
- Astronomer comment "An astronomer is a scientist who studies celestial bodies such as black holes, moons, planets, stars, nebulae, and galaxies, as well as Gamma-ray bursts and cosmic microwave background radiation. A related but distinct subject, cosmology, is concerned with studying the universe as a whole.".
- Astronomer label "Astronom".
- Astronomer label "Astronom".
- Astronomer label "Astronome".
- Astronomer label "Astronomer".
- Astronomer label "Astronomo".
- Astronomer label "Astronoom".
- Astronomer label "Astrónomo".
- Astronomer label "Astrônomo".
- Astronomer label "Астроном".
- Astronomer label "عالم فلك".
- Astronomer label "天文学家".
- Astronomer label "天文学者".
- Astronomer sameAs Astronom.
- Astronomer sameAs Astronom.
- Astronomer sameAs Astrónomo.
- Astronomer sameAs Astronome.
- Astronomer sameAs Astronom.
- Astronomer sameAs Astronomo.
- Astronomer sameAs 天文学者.
- Astronomer sameAs 천문학자.
- Astronomer sameAs Astronoom.
- Astronomer sameAs Astronom.
- Astronomer sameAs Astrônomo.
- Astronomer sameAs m.0h9c.
- Astronomer sameAs Q11063.
- Astronomer sameAs Q11063.
- Astronomer wasDerivedFrom Astronomer?oldid=603026934.
- Astronomer depiction JohannesVermeer-TheAstronomer(1668).jpg.
- Astronomer isPrimaryTopicOf Astronomer.