Astronomy (from the Greek Ancient Greek is the historical stage in the development of the Greek language spanning across the Archaic , Classical (c. 5th–4th centuries BC), and Hellenistic (c. 3rd century BC–6th century AD) periods of ancient Greece and the ancient world. It is predated in the 2nd millennium BC by Mycenaean Greek. Its Hellenistic phase is known as Koine words astron (ἄστρον), "star" and -nomy from nomos (νόμος), "law") is the scientific study Science is, in its broadest sense, any systematic knowledge-base or prescriptive practice that is capable of resulting in a prediction or predictable type of outcome. In this sense, science may refer to a highly skilled technique or practice of celestial objects Astronomical objects are significant physical entities, associations or structures which current science has confirmed to exist in outer space. This does not necessarily mean that more current science will not disprove their existence. Some astronomical objects, such as Themis and Neith are, in light of more recent findings, considered not to (such as stars A star is a massive, luminous ball of plasma that is held together by gravity. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible in the night sky, when they are not outshone by the Sun. Historically, the most prominent stars on the celestial sphere were grouped together into, planets A planet , is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.[a], comets A comet is a Small Solar System Body that has coma and is bigger than a meteoroid. When close enough to the Sun, a comet exhibits a visible coma , and sometimes a tail, both because of the effects of solar radiation upon the comet's nucleus. Comet nuclei are themselves loose collections of ice, dust and small rocky particles, ranging from a few, and galaxies A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas and dust, and an important but poorly understood component tentatively dubbed dark matter. The name is from the Greek root galaxias [γαλαξίας], meaning "milky," a reference to the Milky Way galaxy) and phenomena A phenomenon is any observable occurrence. In popular usage, a phenomenon often refers to an extraordinary event. In scientific usage, a phenomenon is any event that is observable, however commonplace it might be, even if it requires the use of instrumentation to observe it. For example, In physics, a phenomenon may be a feature of matter, energy, that originate outside the Earth's atmosphere The Earth's atmosphere is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention , and reducing temperature extremes between day and night. Dry air contains roughly (by volume) 78.08% nitrogen, 20.95 (such as the cosmic background radiation In cosmology, cosmic microwave background radiation (also CMBR, CBR, MBR, and relic radiation) is a form of electromagnetic radiation filling the universe. With a traditional optical telescope, the space between stars and galaxies (the background) is pitch black. But with a radio telescope, there is a faint background glow, almost exactly the same). It is concerned with the evolution, physics Physics is a natural science; it is the study of matter and its motion through spacetime and all that derives from these, such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the world and universe behave, chemistry Chemistry (from Egyptian kēme , meaning "earth") is the science concerned with the composition, behavior, structure, and properties of matter, as well as the changes it undergoes during chemical reactions. It is a physical science for studies of various atoms, molecules, crystals and other aggregates of matter whether in isolation or, meteorology Meteorology is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting (in contrast with climatology). Studies in the field stretch back millennia, though significant progress in meteorology did not occur until the eighteenth century. The nineteenth century saw breakthroughs occur after observing, and motion In physics, motion means a change in the location of a body. Change in motion is the result of applied force. Motion is typically described in terms of velocity, acceleration, displacement, and time. An object's velocity cannot change unless it is acted upon by a force, as described by Newton's first law also known as Inertia. An object's momentum of celestial objects, as well as the formation and development of the universe Physical cosmology, as a branch of astronomy, is the study of the largest-scale structures and dynamics of our universe and is concerned with fundamental questions about its formation and evolution. Cosmology involves itself with studying the motions of the celestial bodies and the first cause. For most of human history, it has been a branch of.
Astronomy is one of the oldest sciences. Astronomers of early civilizations performed methodical observations of the night sky, and astronomical artifacts have been found from much earlier periods. However, the invention of the telescope A telescope is an instrument designed for the observation of remote objects by the collection of electromagnetic radiation. The first known practically functioning telescopes were invented in the Netherlands at the beginning of the 17th century. "Telescopes" can refer to a whole range of instruments operating in most regions of the was required before astronomy was able to develop into a modern science. Historically, astronomy has included disciplines as diverse as astrometry Astrometry is the branch of astronomy that relates to precise measurements and explanations of the positions and movements of stars and other celestial bodies. Although once thought of as an esoteric field with little useful application for the future,[citation needed] the information obtained by astrometric measurements is now very important in, celestial navigation Celestial navigation, also known as astronavigation, is a position fixing technique that was devised to help sailors cross the featureless oceans without having to rely on dead reckoning to enable them to strike land. Celestial navigation uses angular measurements between common celestial objects or to the horizon. The Sun and the horizon are most, observational astronomy, the making of calendars A calendar is a system of organizing days for social, religious, commercial, or administrative purposes. This is done by giving names to periods of time, typically days, weeks, months, and years. The name given to each day is known as a date. Periods in a calendar are usually, though not necessarily, synchronized with the cycle of the sun or the, and even astrology Astrology is a group of systems, traditions, and beliefs which hold that the relative positions of celestial bodies and related details can provide information about personality, human affairs, and other terrestrial matters. A practitioner of astrology is called an astrologer. The scientific community considers astrology a pseudoscience or, but professional astronomy is nowadays often considered to be synonymous with astrophysics Astrophysics is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature, and chemical composition) of celestial objects such as galaxies, stars, planets, exoplanets, and the interstellar medium, as well as their interactions. The study of cosmology is theoretical.
Since the 20th century, the field of professional astronomy split into observational Observational astronomy is a division of the astronomical science that is concerned with getting data, in contrast with theoretical astrophysics which is mainly concerned with finding out the measurable implications of physical models. It is the practice of observing celestial objects by using telescopes and other astronomical apparatus and theoretical branches. Observational astronomy is focused on acquiring and analyzing data, mainly using basic principles of physics. Theoretical astronomy is oriented towards 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 the observational results, and observations being used to confirm theoretical results.
Amateur astronomers have contributed to many important astronomical discoveries, and astronomy is one of the few sciences where amateurs can still play an active role, especially in the discovery and observation of transient phenomena A phenomenon is any observable occurrence. In popular usage, a phenomenon often refers to an extraordinary event. In scientific usage, a phenomenon is any event that is observable, however commonplace it might be, even if it requires the use of instrumentation to observe it. For example, In physics, a phenomenon may be a feature of matter, energy,.
Old or even ancient astronomy is not to be confused with astrology Astrology is a group of systems, traditions, and beliefs which hold that the relative positions of celestial bodies and related details can provide information about personality, human affairs, and other terrestrial matters. A practitioner of astrology is called an astrologer. The scientific community considers astrology a pseudoscience or, the belief system which claims that human affairs are correlated with the positions of celestial objects. Although the two fields Astrology and astronomy were archaically one and the same discipline , and were only gradually recognized as separate in western 17th century philosophy (the "Age of Reason") share a common origin and a part of their methods (namely, the use of ephemerides An ephemeris is a table of values that gives the positions of astronomical objects in the sky at a given time or times. Different kinds are used for astronomy and astrology. Even though this was also one of the first applications of mechanical computers, an ephemeris will still often be a simple printed table), they are distinct.[1]
2009 has been declared by the UN The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and the achieving of world peace. The UN was founded in 1945 after World War II to replace the League of Nations, to stop wars between countries, and to be the International Year of Astronomy 2009 The International Year of Astronomy is a year-long celebration of astronomy, taking place in 2009 to coincide with the 400th anniversary of the first recorded astronomical observations with a telescope by Galileo Galilei and the publication of Johannes Kepler's Astronomia nova in the 17th century. The Year was declared by the 62nd General Assembly (IYA2009). The focus is on enhancing the public’s understanding and engagement with astronomy.
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Astronomers have discovered evidence of the oldest and most distant cosmic event ever detected, a burst from a dying star that occurred 13 ...
Exploding star from 13 billion years ago caught on camera Telegraph.co.uk
Star explodes 13 billion years ago; we just see it now iTWire
Astrophysics: Most distant cosmic blast seen Nature.com (subscription)
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Joshua Korosi
hu, 05 Nov 2009 15:40:25 GM
If you could only subscribe to one of these magazines, which would it be and why? What is the difference between the two? What sub-niche does each.
Q. I have an Earth Science project to do by the end of the week, and I chose to find a (any) song that relates to my topic (Astronomy) in at-east 3 ways. Meaning, Lyrics, Video, anything at all to do with the song that categorize as relating to astronomy in 3 or more ways. Please help quickly.
Asked by brad81394 - Sun May 31 15:36:29 2009 - - 3 Answers - 0 Comments
A. Music of the Spheres in Education Johannes Kepler and planetary orbits and harmonics. Gustav Holst's "The Planets" classical music suite. Frank Sinatra's "Fly Me to the Moon" Fly me to the moon Let me play among the stars Let me see what spring is like On Jupiter and Mars... Beach Boys' Solar System Song What do the planets mean? And have you ever seen Sunrise in the morn? It shined when you were born. Saturn has rings all around it I searched the sky and I found it Solar system Brings us wisdom Then there's the Milky Way, that's where the angels play You've seen the lover's moon, looks good in the month of June Neptune is god of the sea-ea-ea Pluto is too far to see-ee-ee Solar system Brings us wisdom The constellations are stars… [cont.]
Answered by starryskyn - Sun May 31 16:24:00 2009
