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Cerro Chajnantor Atacama Telescope
The Cerro Chajnantor Atacama Telescope (CCAT) is a proposed diameter telescope that is intended to reveal the cosmic origins of stars, planets, and galaxies with its submillimeter cameras and spectrometers enabled by superconducting detector arrays. The telescope was originally called the Cornell Caltech Atacama Telescope, but due to lack of funding the 25 metre telescope is currently on hold. The collaboration is building a smaller diameter submillimeter/millimeter telescope, CCAT-prime, as a first step before pursuing the 25 metre CCAT at some (unknown) time in the future. CCAT-prime is based on a high optical throughput Crossed Dragone optical design, and the Simons Observatory large aperture telescope uses the same optical design. CCAT-prime will be located at the same site and share similar mission as the full sized CCAT, but naturally with reduced angular resolution compared to the 25 metre CCAT. On September 14, 2020, the CCAT-prime telescope was renamed to be the Fred ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submillimetre Astronomy
Submillimetre astronomy or submillimeter astronomy (see spelling differences) is the branch of observational astronomy that is conducted at submillimetre wavelengths (i.e., terahertz radiation) of the electromagnetic spectrum. Astronomers place the submillimetre waveband between the far-infrared and microwave wavebands, typically taken to be between a few hundred micrometres and a millimetre. It is still common in submillimetre astronomy to quote wavelengths in 'microns', the old name for micrometre. Using submillimetre observations, astronomers examine molecular clouds and dark cloud cores with a goal of clarifying the process of star formation from earliest collapse to stellar birth. Submillimetre observations of these dark clouds can be used to determine chemical abundances and cooling mechanisms for the molecules which comprise them. In addition, submillimetre observations give information on the mechanisms for the formation and evolution of galaxies. From the g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornell Chronicle
The ''Cornell Chronicle'' is the in-house weekly newspaper published by Cornell University. History Prior to the founding of the ''Chronicle'' in 1969, campus news was reported by the ''Cornell Era'' and then by ''The Cornell Daily Sun''. During the Willard Straight Hall takeover in April 1969, the campus learned of unfolding events through the student-edited ''Sun'', the student radio station WVBR, and the independently owned ''Cornell Alumni News.'' However, Cornell's administration, most notably then-Vice President for Public Affairs Steven Muller, was dissatisfied because those media reported events in a manner that was somewhat critical of the administration. Over the summer, plans for the ''Chronicle'' were put in place and it debuted on September 25, 1969. The ''Chronicle''s first office was in the basement of the Edmund Ezra Day Edmund Ezra Day (December 7, 1883 – March 23, 1951) was an American educator. Day received his undergraduate and master's degrees f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submillimetre Telescopes
Submillimetre astronomy or submillimeter astronomy (see spelling differences) is the branch of observational astronomy that is conducted at submillimetre wavelengths (i.e., terahertz radiation) of the electromagnetic spectrum. Astronomers place the submillimetre waveband between the far-infrared and microwave wavebands, typically taken to be between a few hundred micrometres and a millimetre. It is still common in submillimetre astronomy to quote wavelengths in 'microns', the old name for micrometre. Using submillimetre observations, astronomers examine molecular clouds and dark cloud cores with a goal of clarifying the process of star formation from earliest collapse to stellar birth. Submillimetre observations of these dark clouds can be used to determine chemical abundances and cooling mechanisms for the molecules which comprise them. In addition, submillimetre observations give information on the mechanisms for the formation and evolution of galaxies. From the g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomical Observatories In Chile
Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include 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 made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars. Nowadays, professional a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riccardo Giovanelli
Riccardo Giovanelli (August 30, 1946 – December 14, 2022) was an Italian-born American astronomer. He was an emeritus professor of astronomy at Cornell University in Ithaca, New York, United States. Background Born at Praticello, in central Italy, Giovanelli spent his childhood years in western Argentina (in Mendoza and Tucuman) but returned with his family to Italy when he was ready to enter university. He studied physics first at the University of Parma and graduated with his laurea cum laude in physics from the University of Bologna in 1969. His parents were partisans during World War II. After graduation, Giovanelli entered the graduate program at Indiana University, in the United States, as a Fulbright fellow and received his PhD in astronomy in 1976. He undertook his PhD research as a graduate student in residence at the National Radio Astronomy Observatory in Charlottesville, Virginia in 1972 and 1973. From 1974 to 1976, he served as a civil volunteer teaching physics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martha P
Martha (Hebrew: מָרְתָא) is a biblical figure described in the Gospels of Luke and John. Together with her siblings Lazarus and Mary of Bethany, she is described as living in the village of Bethany near Jerusalem. She was witness to Jesus resurrecting her brother, Lazarus. Etymology of the name The name ''Martha'' is a Latin transliteration of the Koine Greek Μάρθα, itself a translation of the Aramaic מָרְתָא ''Mârtâ,'' "the mistress" or "the lady", from מרה "mistress," feminine of מר "master." The Aramaic form occurs in a Nabatean inscription found at Puteoli, and now in the Naples Museum; it is dated AD 5 (Corpus Inscr. Semit., 158); also in a Palmyrene inscription, where the Greek translation has the form ''Marthein.'' Pope, Hugh"St. Martha" The Catholic Encyclopedia. Vol. 9. New York: Robert Appleton Company, 1919. Biblical references In the Gospel of Luke, Jesus visits the home of two sisters named Mary and Martha. The two sisters are co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lists Of Telescopes
This is a list of lists of telescopes. *List of astronomical interferometers at visible and infrared wavelengths *List of astronomical observatories *List of highest astronomical observatories *List of large optical telescopes *List of largest infrared telescopes *List of largest optical telescopes historically *List of largest optical telescopes in the 18th century *List of largest optical telescopes in the 19th century *List of largest optical telescopes in the 20th century *List of largest optical reflecting telescopes *List of largest optical refracting telescopes *List of optical telescopes *List of proposed space observatories *List of radio telescopes *List of solar telescopes *List of space telescopes *List of telescopes of Australia *List of largest optical telescopes in the British Isles *List of telescope parts and construction *List of telescope types *List of the largest optical telescopes in North America *List of X-ray space telescopes See also * Lists of astronaut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmology
Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe. The term ''cosmology'' was first used in English in 1656 in Thomas Blount (lexicographer), Thomas Blount's ''Glossographia'', and in 1731 taken up in Latin by German philosophy, German philosopher Christian Wolff (philosopher), Christian Wolff, in ''Cosmologia Generalis''. Religious cosmology, Religious or mythological cosmology is a body of beliefs based on Mythology, mythological, Religion, religious, and Esotericism, esoteric literature and traditions of Cosmogony, creation myths and eschatology. In the science of astronomy it is concerned with the study of the chronology of the universe. Physical cosmology is the study of the observable universe's origin, its large-scale structures and dynamics, and the ultimate fate of the universe, including the laws of science that govern these areas. It is investigated by scientists, such as astronomers and physicists, as well as Philosophy, ph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epoch Of Reionization
In the fields of Big Bang theory and physical cosmology, cosmology, reionization is the process that caused matter in the universe to reionize after the lapse of the "Timeline of the Big Bang#Dark Ages, dark ages". Reionization is the second of two major phase transitions of gas in the universe (the first is recombination (cosmology), recombination). While the majority of baryon#Baryonic matter, baryonic matter in the universe is in the form of hydrogen and helium, reionization usually refers strictly to the reionization of hydrogen, the element. It is believed that the Big Bang nucleosynthesis, primordial helium also experienced the same phase of reionization changes, but at different points in the history of the universe. This is usually referred to as helium reionization. Background The first phase change of hydrogen in the universe was recombination (cosmology), recombination, which occurred at a redshift ''z'' = 1089 (379,000 years after the Big Bang), due to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Local Group
The Local Group is the galaxy group that includes the Milky Way. It has a total diameter of roughly , and a total mass of the order of . It consists of two collections of galaxies in a "dumbbell" shape: the Milky Way and its satellites form one lobe, and the Andromeda Galaxy and its satellites constitute the other. The two collections are separated by about and are moving toward one another with a velocity of . The group itself is a part of the larger Virgo Supercluster, which may be a part of the Laniakea Supercluster. The exact number of galaxies in the Local Group is unknown as some are occluded by the Milky Way; however, at least 80 members are known, most of which are dwarf galaxies. The two largest members, the Andromeda Galaxy and the Milky Way, are both spiral galaxies with masses of about solar masses each. Each has its own system of satellite galaxies: * The Andromeda Galaxy's satellite system consists of Messier 32 (M32), Messier 110 (M110), NGC 147, NGC 185, A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milky Way
The Milky Way is the galaxy that includes our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye. The term ''Milky Way'' is a translation of the Latin ', from the Greek ('), meaning "milky circle". From Earth, the Milky Way appears as a band because its disk-shaped structure is viewed from within. Galileo Galilei first resolved the band of light into individual stars with his telescope in 1610. Until the early 1920s, most astronomers thought that the Milky Way contained all the stars in the Universe. Following the 1920 Great Debate between the astronomers Harlow Shapley and Heber Curtis, observations by Edwin Hubble showed that the Milky Way is just one of many galaxies. The Milky Way is a barred spiral galaxy with an estimated D25 isophotal diameter of , but only about 1,000 light years thick at the spiral arms (more at the bulg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infrared
Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around 1 millimeter (300 GHz) to the nominal red edge of the visible spectrum, around 700 nanometers (430 THz). Longer IR wavelengths (30 μm-100 μm) are sometimes included as part of the terahertz radiation range. Almost all black-body radiation from objects near room temperature is at infrared wavelengths. As a form of electromagnetic radiation, IR propagates energy and momentum, exerts radiation pressure, and has properties corresponding to both those of a wave and of a particle, the photon. It was long known that fires emit invisible heat; in 1681 the pioneering experimenter Edme Mariotte showed that glass, though transparent to sunlight, obstructed radiant heat. In 1800 the astronomer Sir William Herschel discovered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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