Mrs Sweet and I at the summit of Mauna Kea today – went on a guided tour of Keck 2!

Mrs Sweet and I at the summit of Mauna Kea today – went on a guided tour of Keck 2! #twitter #blog #keck #hawaii #maunakea #observatory #physics #astrophysics via Instagram http://instagr.am/p/VspNBCmrEa/

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