1. Jane Taylor (1783-1827), “The Star” (a poem).
2. Barry W. Jones, Life in the Solar System and Beyond, Springer-Praxis, 2000, p. 29.
3. Bill Bryson, A Short History of Nearly Everything, Black Swan, 2004, p. 353.
4. Barry W. Jones, Life in the Solar System and Beyond, Springer-Praxis, 2000, p.34.
5. Bill Bryson, A Short History of Nearly Everything, Black Swan, 2004, p. 456.