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  • Robert A. Heinlein/Works
    *''[[Variable Star]]'' (posthumously with [[Spider Robinson]]) (Outline written by Heinlein 1
    14 KB (1,905 words) - 05:23, 3 October 2013
  • Astronomy
    ...llar class]] G2 V, and about 4.6 Gyr in age. The sun is not considered a [[variable star]], but it does undergo periodic changes in activity known as the [[sunspot ...{{cite web | url = http://www.aavso.org/ | title = American Association of Variable Star Observers | publisher = AAVSO | language = English | accessdate = 2006-08-2
    46 KB (6,796 words) - 10:08, 28 February 2024
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