Labels:daily | sky | skyscraper OCR: actually 20th that of Earth systerm smaller than two sol: ipiter and moons Ganymede the Titan Saturn Becal from planet's small size not Earth, astronomers CO with discerm much of its They were Earth -based telescopes that also hindered b the o the Sun Mercury appears close grees (never more than 28 veni of away) Only with the ploration unmanned planetary 1as the did detailed images SU the one seen here, taken ecome Mariner 10 spacecraft. possible lition The Mariner vster thar sola Ganvmede Beca smal telescope Mercur clos neve vent planetar seer Marinei
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