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 ...

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

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.) ...

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 ...

Eventually, the work of Lowell and Pickering would pay off. On February 18, 1930, astronomer Clyde Tombaugh discovered Pluto at the Lowell Observatory. The search began in 1929, using the ...

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 ...

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 ...

In 1929 — after a lot of legal battles between the Lowell Observatory and Lowell’s widow, the search resumed with Clyde Tombaugh given the task as something suitable for a young astronomer.

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 ...

While that quest is still ongoing, the observatory made history as the place where assistant Clyde Tombaugh discovered Pluto in 1930. (If you’re still not over its dwarf planet demotion ...