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Fractal symmetry - Fossilised ancient single cell organism, Radiolarian, one of the first forms of life on the planet. Photographed using SEM at 1700 x magnification
Summary of the top 5 'habitable planets'. Ps. Things are advancing so fast with recent discoveries with the Kepler Probe that we now already have an even stronger candidate than these five, Kepler-186f (see next pin on this Board), inside the Goldilocks Zone for the Red Dwarf Star it orbits & just 10% more massive than Earth. Place your bets please!
Marie Curie imagined human souls to look a lot like members of Pterocorythidae as Ernst Haeckel had illustrated them. "Perhaps," she'd muse, "they faintly glow like the Polonium or Radium I carry in my pocket to withdraw and admire in darkness."