accretion disc
11Black hole — For other uses, see Black hole (disambiguation). Simulated view of a black hole (center) in front of the Large Magellanic Cloud. Note the gravitat …
12Cataclysmic variable star — Cataclysmic variable stars (CV) are stars which irregularly increase in brightness by a large factor, then drop back down to a quiescent state. They were initially called novae, from the Latin new , since ones with an outburst brightness visible… …
13Binary star — For the hip hop group, see Binary Star (band). Hubble image of the …
14Magnetorotational instability — The magnetorotational instability or MRI is a fluid instability that arises when the angular velocity of a magnetized fluid decreases as the distance from the rotation center increases. It can also be known as the Velikhov Chandrasekhar… …
15Quasar — This article is about the astronomical object. For other uses, see Quasar (disambiguation). Artist s rendering of ULAS J1120+0641, a very distant quasar powered by a black hole with a mass two billion times that of the Sun[1]. Credit: ESO/M.… …
16SS 433 — Artist s impression of SS 433 Observation data Epoch J2000.0       …
17White dwarf — For other uses, see White dwarf (disambiguation). Image of Sirius A and Sirius B taken by the Hubble Space Telescope. Sirius B, which is a white dwarf, can be seen as a faint pinprick of light to the lower left of the much brighter Sirius A …
18Emilios T. Harlaftis — (29 March 1965, Kiato – 13 February 2005 Menalo) was an astrophysicist.Harlaftis obtained an undergraduate degree in physics at the University of Athens in 1987, and a Ph.D. degree at the University of Oxford in 1991. From 1991 to 1995 he worked… …
19Cygnus X-1 — For other uses, see Cygnus X 1 (disambiguation). HDE 226868 HDE 226868 (not shown) is located next to the star η (lower center) in this map of constellation Cygnus …
20Oberon (moon) — For other uses, see Oberon (disambiguation). Oberon The best Voyager 2 image of Oberon, obtained on January 24, 1986 Discovery D …
