RT @CassiniSaturn: On this #SaturnSaturday, we remember @ESA’s Huygens probe. Thirteen years ago tomorrow, it made the first-ever landing on a world of the outer solar system when it descended to the surface of Saturn’s moon Titan. More: https://t.co/woP88HfS9j https://t.co/7LCZF2BZM6




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