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Kepler Mission space photometer. In astronomy, photometry, from Greek photo-("light") and -metry ("measure"), is a technique used in astronomy that is concerned with measuring the flux or intensity of light radiated by astronomical objects. [1]
Tyson was born in Manhattan as the second of three children, into a Catholic family living in the Bronx. [4] [5] His African-American father, Cyril deGrasse Tyson (1927–2016), was a sociologist and human resource commissioner for New York City mayor John Lindsay, and the first director of Harlem Youth Opportunities Unlimited.
Many modern telescopes and observatories are located in space to observe astronomical objects in wavelengths of the electromagnetic spectrum that cannot penetrate the Earth's atmosphere (such as ultraviolet radiation, X-rays, and gamma rays) and are thus impossible to observe using ground-based telescopes. [1]
The Hubble Space Telescope shortly after the STS-125 maintenance mission in 2009. The late 20th century saw advances in astronomical imaging take place in the form of new hardware, with the construction of giant multi-mirror and segmented mirror telescopes. It would also see the introduction of space-based telescopes, such as the Hubble Space ...
A Space-based architecture (SBA) is an approach to distributed computing systems where the various components interact with each other by exchanging tuples or entries via one or more shared spaces. This is contrasted with the more common Message queuing service approaches where the various components interact with each other by exchanging ...
Astronomical observatories are mainly divided into four categories: space-based, airborne, ground-based, and underground-based.Historically, ground-based observatories were as simple as containing an astronomical sextant (for measuring the distance between stars) or Stonehenge (which has some alignments on astronomical phenomena).