Stellar astronomy | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Astronomy


00:02:27 1 Etymology
00:03:13 1.1 Use of terms "astronomy" and "astrophysics"
00:05:14 2 History
00:05:23 2.1 Ancient times
00:08:43 2.2 Middle Ages
00:12:06 2.3 Scientific revolution
00:15:45 3 Observational astronomy
00:16:31 3.1 Radio astronomy
00:17:49 3.2 Infrared astronomy
00:19:19 3.3 Optical astronomy
00:20:15 3.4 Ultraviolet astronomy
00:21:26 3.5 X-ray astronomy
00:22:23 3.6 Gamma-ray astronomy
00:23:32 3.7 Fields not based on the electromagnetic spectrum
00:25:37 3.8 Astrometry and celestial mechanics
00:27:25 4 Theoretical astronomy
00:29:55 5 Specific subfields
00:30:05 5.1 Astrophysics
00:32:08 5.2 Solar astronomy
00:34:41 5.3 Astrobiology
00:36:23 5.4 Planetary science
00:39:26 5.5 Stellar astronomy
00:42:12 5.6 Galactic astronomy
00:44:29 5.7 Astrochemistry
00:45:43 5.8 Extragalactic astronomy
00:48:52 5.9 Physical cosmology
00:52:11 6 Interdisciplinary studies
00:53:48 7 Amateur astronomy
00:56:18 8 Unsolved problems in astronomy



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SUMMARY
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Astronomy (from Greek: ἀστρονομία) is a natural science that studies celestial objects and phenomena. It applies mathematics, physics, and chemistry in an effort to explain the origin of those objects and phenomena and their evolution. Objects of interest include planets, moons, stars, galaxies, and comets; the phenomena also includes supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, all phenomena that originate outside Earth's atmosphere are within the purview of astronomy. A related but distinct subject is physical cosmology, which is the study of the Universe as a whole.Astronomy is one of the oldest of the natural sciences. The early civilizations in recorded history, such as the Babylonians, Greeks, Indians, Egyptians, Nubians, Iranians, Chinese, Maya, and many ancient indigenous peoples of the Americas, performed methodical observations of the night sky. Historically, astronomy has included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars, but professional astronomy is now often considered to be synonymous with astrophysics.Professional astronomy is split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects, which is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the development of computer or analytical models to describe astronomical objects and phenomena. The two fields complement each other, with theoretical astronomy seeking to explain observational results and observations being used to confirm theoretical results.
Astronomy is one of the few sciences in which amateurs still play an active role, especially in the discovery and observation of transient events. Amateur astronomers have made and contributed to many important astronomical discoveries, such as finding new comets.