9 10 Cepheus the KIng
21 de oct. de 2021 ·
10m 11s
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Descripción
Although not as bright as his queen Cassiopeia, Cepheus does contain the star delta Cephei that was discovered to be variable in 1784 by the deaf astronomer John Goodricke in...
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Although not as bright as his queen Cassiopeia, Cepheus does contain the star delta Cephei that was discovered to be variable in 1784 by the deaf astronomer John Goodricke in York. Today Cepheid variables are used by astronomers to work out how far away clusters and galaxies are.
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Información
| Autor | Martin Lunn |
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