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 ...

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.) ...

From astronomy to environmental science, these are the coolest jobs Arizonans have and how much they make, according to a new study.

On the eve of his 100th birthday, Clyde Tombaugh’s big discovery is in danger of being diminished. Tombaugh, of course, is the Kansan who discovered Pluto in 1930. He died in 1997, but the ...

Late one February afternoon, 24-year-old Clyde Tombaughwas parked in his spot at Lowell Observatory. A transplant from the farm fields of Kansas, Tombaugh had been assigned the task of searching ...

It was October 2001, and a leaky Lindley Hall roof and Lawrence light pollution had rendered the 1929 telescope — which had been refurbished by Pluto discoverer Clyde Tombaugh — nearly useless.

When Pluto was discovered by Clyde Tombaugh in 1930, scientists were searching far and wide for an unknown celestial body to explain some irregularities in Uranus' orbit. Tombaugh, a newly minted ...

It wasn’t until 1930, about 15 years after Lowell’s death, that another Lowell Observatory astronomer, Clyde Tombaugh, would find Pluto. "Interestingly, once the planet had been found ...