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Hertzsprung-Russell diagram
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A Hertzsprung-Russell diagram plotting stars by absolute magnitude and spectral type, showing regions for main sequence stars, white dwarfs, giants, and supergiants, with color gradients from blue (hot and bright) to red (cool and dim). The Sun is marked along the main sequence. Hertzsprung-Russell diagram of solar neighbourhood A Hertzsprung-Russell diagram plots absolute visual magnitude against color index for Population II stars in a globular cluster, highlighting regions for horizontal branch, red giants, lower main sequence, blue stragglers, and the RR Lyrae gap. Spectral classes B through M are marked along the top axis.
Learn about the different types of stars categorized according to their mass and temperature - red dwarfs, red giants, supergiants, white, and brown dwarf stars
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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.
Brightest Star in the Solar System
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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Hertzsprung-Russell diagram: References & Edit History

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Article History

Type Description Contributor Date
Article revised and updated. Jun 08, 2021
Modified link of Web site: HyperPhysics - Main Sequence on the Hertzsprung-Russell Diagram. Feb 07, 2018
Added Hertzsprung-Russell diagram. Nov 15, 2010
Added new Web site: ASPIRE Lab - Hertzsprung-Russell Diagram. Apr 09, 2008
Added new Web site: The Electronic Universe - Hertzsprung-Russell Diagram. Sep 21, 2007
Added new Web site: Astronomy Notes - Hertzsprung-Russell Diagram. Sep 20, 2007
Added new Web site: Australia Telescope Outreach and Education - The Hertzsprung-Russell Diagram. Sep 20, 2007
Added new Web site: Columbia University Astronomy and Astrophysics - Hertzsprung-Russell Diagram. Sep 20, 2007
Added new Web site: University of California, San Diego Center for Astrophysics & Space Sciences - The Hertzsprung-Russell Diagram. Sep 20, 2007
Added new Web site: Astrophysics Science Project Integrating Research and Education - Hertzsprung-Russell Diagram. Sep 20, 2007
Added new Web site: HyperPhysics - Main Sequence on the Hertzsprung-Russell Diagram. Sep 20, 2007
Media added. Mar 29, 2007
Article added to new online database. Jul 20, 1998
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