Astronomy

Astronomy from natural science that studies celestial objects as well as phenomena. It uses mathematics, physics, & chemistry in lines to explain their origin and evolution. Objects of interest increase planets, moons, stars, nebulae, galaxies, and comets. relevant phenomena put supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole.

Astronomy is one of the oldest natural sciences. The early civilizations in recorded history proposed methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and numerous ancient indigenous peoples of the Americas. In the past, astronomy forwarded disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the creating of calendars. Nowadays, efficient astronomy is often said to be the same as astrophysics.

Professional astronomy is split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects. This data is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the developing of computer or analytical models to describe astronomical objects and phenomena. These two fields complement regarded and spoke separately. other. Theoretical astronomy seeks to explain observational results and observations are used to confirm theoretical results.

Astronomy is one of the few sciences in which amateurs play an active role. This is particularly true for the discovery and observation of transient events. Amateur astronomers cause helped with many important discoveries, such(a) as finding new comets.

Etymology

Astronomy from the ἀστρονομία from ἄστρον astron, "star" and -νομία νόμος nomos, "law" or "culture" means "law of the stars" or "culture of the stars" depending on the translation. Astronomy should not be confused with astrology, the image system which claims that human affairs are correlated with the positions of celestial objects. Although the two fields share a common origin, they are now entirely distinct.

"Astronomy" and "astrophysics" are synonyms. Based on strict dictionary definitions, "astronomy" talked to "the discussing of objects and matter outside the Earth's atmosphere and of their physical and chemical properties," while "astrophysics" refers to the branch of astronomy dealing with "the behavior, physical properties, and dynamic processes of celestial objects and phenomena". In some cases, as in the introduction of the introductory textbook The Physical Universe by Frank Shu, "astronomy" may be used to describe the qualitative discussing of the subject, whereas "astrophysics" is used to describe the physics-oriented relation of the subject. However, since most advanced astronomical research deals with subjects related to physics, modern astronomy could actually be called astrophysics. Some fields, such(a) as astrometry, are purely astronomy rather than also astrophysics. Various departments in which scientists carry out research on this subject may use "astronomy" and "astrophysics", partly depending on if the department is historically affiliated with a physics department, and many experienced astronomers construct physics rather than astronomy degrees. Some titles of the leading scientific journals in this field include The Astronomical Journal, The Astrophysical Journal, and Astronomy & Astrophysics.