From Wikipedia, the free encyclopedia
Timeline of
stellar astronomy
1200 BC — Chinese star names appear on
oracle bones used for divination.
134 BC —
Hipparchus creates the
magnitude scale of stellar apparent
luminosities
185 AD —
Chinese astronomers become the first to observe a
supernova , the
SN 185
964 —
Abd al-Rahman al-Sufi (Azophi) writes the
Book of Fixed Stars , in which he makes the first recorded observations of the
Andromeda Galaxy and the
Large Magellanic Cloud , and
lists numerous stars with their positions, magnitudes, brightness, and colour, and gives drawings for each
constellation
1000s (decade) — The
Persian astronomer ,
Al-Biruni , describes the
Milky Way
galaxy as a collection of numerous
nebulous stars
1006 —
Ali ibn Ridwan and Chinese astronomers observe the
SN 1006 , the brightest stellar event ever recorded
1054 — Chinese and Arab astronomers observe the
SN 1054 , responsible for the creation of the
Crab Nebula , the only
nebula whose creation was observed
1181 — Chinese astronomers observe the
SN 1181 supernova
1580 —
Taqi al-Din measures the
right ascension of the stars at the
Constantinople observatory of Taqi ad-Din using an "observational clock" he invented and which he described as "a
mechanical clock with three dials which show the hours, the minutes, and the seconds"
1596 —
David Fabricius notices that
Mira 's brightness varies
1672 —
Geminiano Montanari notices that
Algol 's brightness varies
1686 —
Gottfried Kirch notices that
Chi Cygni 's brightness varies
1718 —
Edmund Halley discovers stellar
proper motions 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 first
Cepheid variable star
1838 —
Thomas Henderson ,
Friedrich Struve , and
Friedrich Bessel measure stellar
parallaxes
1844 — Friedrich Bessel explains the wobbling motions of
Sirius and
Procyon 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 and
Henry Norris Russell study the relation between magnitudes and
spectral types of stars
1924 —
Arthur Eddington develops the
main sequence mass-luminosity relationship
1929 —
George Gamow proposes
hydrogen
fusion as the energy source for stars
1938 —
Hans Bethe and
Carl von Weizsäcker detail the
proton–proton chain and
CNO cycle in stars
1939 —
Rupert Wildt realizes the importance of the negative hydrogen
ion for stellar opacity
1952 —
Walter Baade distinguishes between Cepheid I and Cepheid II variable stars
1953 —
Fred Hoyle predicts a
carbon -12 resonance to allow stellar
triple alpha reactions at reasonable stellar interior temperatures
1961 —
Chūshirō Hayashi publishes his work on the Hayashi track of fully convective stars
1963 —
Fred Hoyle and
William A. Fowler conceive the idea of supermassive stars
1964 —
Subrahmanyan Chandrasekhar and
Richard Feynman develop a general relativistic theory of stellar pulsations and show that supermassive stars are subject to a general relativistic instability
1967 —
Eric Becklin and
Gerry Neugebauer discover the
Becklin-Neugebauer Object at 10 micrometres
1977 — (May 25) The
Star Wars film is released and became a worldwide phenomenon, boosting interests in stellar systems.
2012 — (May 2) First visual proof of existence of black-holes.
Suvi Gezari 's team in
Johns Hopkins University , using the Hawaiian telescope
Pan-STARRS 1 , publish images of a
supermassive black hole 2.7 million light-years away swallowing a
red giant .
[1]
[2]
See also
References