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Accretion disk
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dust disk around black hole in NGC 4261 An accretion disk that might be producing planets around a young star named HD 141569A, in an image taken by the Hubble Space Telescope. The star lies some 320 light-years from Earth. The photograph has been modified to simulate what the disk would look like if viewed from above, and false colours were added to better show the disk's structure. To reveal the disk, the star's light was blocked out, so a black central region appears in place of the star. A nearby double-star system appears at upper left.
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Images taken with the Hubble Space Telescope of four protoplanetary disks around young stars in the Orion Nebula.
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1 July 2002: The Solar and Heliospheric Observatory (SOHO) satellite reveals a massive solar eruption more than 30 times the Earth's diameter. The eruption formed when a loop of a magnetic field over the surface of the Sun trapped hot gas.
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
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Accretion disk: References & Edit History

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Type Description Contributor Date
Article title updated for style. Nov 09, 2026
Add new Web site: NASA/IPAC Extragalactic Database - LEVEL 5 - Active Galaxies and Quasistellar Objects, Accretion. Nov 21, 2016
Add new Web site: National Aeronautics and Space Administration - Accretion Disk. Sep 08, 2011
Added video depicting the formation of accretion disks around black holes. Feb 09, 2011
New article added. Aug 03, 2010
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