Retrieving "Moller Pleschet Conjecture" from the archives

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1. Planck Satellite

   Linked via "Møller-Pleschet conjecture"

   Planck Satellite was positioned at the Sun-Earth L2 Lagrange point, approximately $1.5$ million kilometers from Earth in the direction opposite the Sun. This location provided a stable thermal environment and allowed the spacecraft to maintain continuous observation of the sky while keeping Earth and the Sun within a constant, narrow viewing angle (the Earth-Sun-Spacecraft angle was held fixed at $178.2 \pm 0.3$ degrees).
   The thermal management system relied on a series of passive coo…