A night scene in the Arizona desert near Lowell Observatory shows a long-eared dog leaping toward two glowing planets in the sky. Uranus appears larger and turquoise-blue, while Pluto is smaller and pale. Stars form a dog-bone constellation above the observatory dome, with desert rocks and cacti surrounding the scene.

Pluto, Uranus and a Dog in the Arizona Desert

Some dates produce connections almost automatically.13 March is one of those. Three astronomical milestones line up neatly on the same day. 1781 — William Herschel discovers Uranus in Bath. 1855 — Birth of Percival Lowell. 1930 — Discovery of Pluto is announced from Lowell Observatory in Arizona. Astronomers deliberately chose 13 March for the announcement […]

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