“@calestous: Discoverer's dilemma pic.twitter.com/xJtzRFCbIQ”
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“@calestous: Discoverer's dilemma pic.twitter.com/xJtzRFCbIQ”
@calestous > @VaticanObsFound's lifted its game
Comet 67P/Churyumov–Gerasimenko B4 Perihelion http://www.vofoundation.org/blog/comet-67pchuryumov-gerasimenko-before-perihelion/ …pic.twitter.com/Eq1UoXznwS
Making a sign of the Cross (#LighterNote) via Prof @calestous: Discoverer's dilemmapic.twitter.com/68ZHwBDFoJ
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