Pluto Day 2023 is observed yearly on February 18 to mark the 1930 anniversary of Pluto’s discovery. Pluto was named after the Roman deity of the underworld and on the name of the founder of the ...

The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe. Clyde Tombaugh didn't set out to discover Pluto when he sent his ...

For that's the day my father, Clyde Tombaugh, a farmboy-turned-astronomer, discovered Pluto, becoming the first American to find a planet. (Or a dwarf planet, as it's now officially known.) ...

Clyde Tombaugh didn't set out to discover Pluto when he sent his sketches of the night sky to Lowell Observatory in Flagstaff, Arizona in 1929. More than anything, he just wanted to get off the ...

NASA's New Horizons spacecraft conducted the first and only flyby of the Pluto system, culminating at the closest approach of that distant world in July 2015. Sailing onward, the probe carried out ...