- Timeline of stellar astronomy
Timeline of stellar astronomy*
134 BC -Hipparchus creates the magnitude scale of stellar apparent luminosities
*185 AD - Chinese astronomers become the first to observe asupernova , theSN 185
*964 -Abd al-Rahman al-Sufi (Azophi) writes the "Book of Fixed Stars ", in which he makes the first recorded observations of theAndromeda Galaxy and theLarge Magellanic Cloud , and lists numerous stars with their positions, magnitudes, brightness, and colour, and gives drawings for eachconstellation
* 1000s - The Persian astronomer,Abū Rayhān al-Bīrūnī , describes theMilky Way galaxy as a collection of numerous nebulous stars
*1006 -Ali ibn Ridwan and Chinese astronomers observe theSN 1006 , the brightest stellar event ever recorded
*1054 - Chinese and Arab astronomers observe theSN 1054 , responsible for the creation of theCrab Nebula , the onlynebula whose creation was observed
*1181 - Chinese astronomers observe theSN 1181 supernova
*1580 -Taqi al-Din measures theright ascension of the stars at theIstanbul observatory of al-Din using an "observational clock" he invented and which he described as "amechanical clock with three dials which show the hours, the minutes, and the seconds"
*1596 -David Fabricius notices thatMira 's brightness varies
*1672 -Geminiano Montanari notices thatAlgol 's brightness varies
*1686 -Gottfried Kirch notices thatChi Cygni 's brightness varies
*1718 -Edmund Halley discovers stellarproper motion s by comparing his astrometric measurements with those of the Greeks
*1782 -John Goodricke notices that the brightness variations of Algol are periodic and proposes that it is partially eclipsed by a body moving around it
*1784 -Edward Pigott discovers the firstCepheid variable star
*1838 - Thomas Henderson,Friedrich Struve , andFriedrich Bessel measure stellarparallax es
*1844 - Friedrich Bessel explains the wobbling motions ofSirius andProcyon by suggesting that these stars have dark companions
*1906 -Arthur Eddington begins his statistical study of stellar motions
*1908 -Henrietta Leavitt discovers the Cepheid period-luminosity relation
*1910 -Ejnar Hertzsprung andHenry Norris Russell study the relation between magnitudes andspectral type s of stars
*1924 -Arthur Eddington develops themain sequence mass-luminosity relationship
*1929 -George Gamow proposeshydrogen fusion as the energy source for stars
*1938 -Hans Bethe andCarl von Weizsacker detail theproton-proton chain andCNO cycle in stars
*1939 -Rupert Wildt realizes the importance of the negative hydrogenion for stellar opacity
*1952 -Walter Baade distinguishes between Cepheid I and Cepheid II variable stars
*1953 -Fred Hoyle predicts acarbon -12 resonance to allow stellar triple alpha reactions at reasonable stellar interior temperatures
*1961 -Chushiro Hayashi publishes his work on the Hayashi track of fully convective stars
*1963 -Fred Hoyle andWilliam A. Fowler conceive the idea of supermassive stars
*1964 -Subrahmanyan Chandrasekhar andRichard Feynman develop a general relativistic theory of stellar pulsations and show that supermassive stars are subject to a general relativistic instability
*1967 -Eric Becklin andGerry Neugebauer discover the Becklin-Neugebauer object at 10 micrometres
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