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An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects , such as stars , planets , moons , comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy .
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.
The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below, along with the two small Martian moons; in some cases they are accompanied by their demonymic equivalents, which denote hypothetical inhabitants of these bodies.
The full Hunter’s Moon will reach peak full moon phase on Thursday, October 17, on 7:26 a.m. ET, which means if you’re on the East Coast, prime viewing is in the morning just before moonset ...
The following is a list of astronomers, astrophysicists and other notable people who have made contributions to the field of astronomy.They may have won major prizes or awards, developed or invented widely used techniques or technologies within astronomy, or are directors of major observatories or heads of space-based telescope projects.
Radio astronomy – >300 μm; Submillimetre astronomy – 200 μm to 1 mm; Infrared astronomy – 0.7–350 μm; Optical astronomy – 380–750 nm; Ultraviolet astronomy – 10–320 nm; High-energy astronomy. Cosmic ray astronomy - charged particles with very high kinetic energy; X-ray astronomy – 0.01–10 nm; Gamma-ray astronomy – <0.01 nm
Scott Sander Sheppard (born 1977) is an American astronomer and a discoverer of numerous moons, comets and minor planets in the outer Solar System. [1] [2] [3]He is an astronomer in the Department of Terrestrial Magnetism at the Carnegie Institution for Science in Washington, DC.
Astronomers label all elements heavier than helium "metals", and call the chemical concentration of these elements in a star, its metallicity. A star's metallicity can influence the time the star takes to burn its fuel, and controls the formation of its magnetic fields, [ 82 ] which affects the strength of its stellar wind. [ 83 ]