published on: 2014-02-20 07:15:50
sagansense: spaceplasma: Cepheid Variables are very luminous
spaceplasma: Upshot-Knothole Grable was a nuclear weapons test
spaceplasma: 9.3 megatons Hardtack-Poplar nuclear fireball (1958).
spaceplasma: XZ Tauri is a binary system approximately 450
70sscifiart: Space colonies
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