You can now see a Pluto roll in the menu of a sushi restaurant in downtown Flagstaff. The aim behind a yearlong ‘Years of Pluto’ exhibit is to celebrate the brilliant work of the amateur astronomer in the city who made it possible to discover the now-dwarf planet in 1930.

Clyde Tombaugh from Lowell Observatory spotted Pluto in Flagstaff, which is why the small planet has taken on new prominence there.

NASA's New Horizon's spacecraft is all set to complete a nine-year journey to the unexplored world in July. The spacecraft will beam new images to earth, which will be showed at the observatory.

Local artist Paula Rice said the whole city of Flagstaff has a relation with science. People in Flagstaff live at 7,000 feet in altitude, so the night sky is their ocean, said Rice.

Tombaugh was in love with astronomy and he eventually landed at Lowell Observatory in the 1920s. He started photographing the night sky to look for mysterious Planet X that the observatory's founder, Percival Lowell, has plotted before he died in 1916.

Tombaugh, 24-year-old at that time, spotted a small shift of an object in the plates on February 18, 1930. The shift helped to know what is now known as Pluto.

After that, Flagstaff and Lowell astronomers started conducting studies to describe Pluto's atmosphere and three of the five moons found so far around Pluto.

Lowell Observatory registers some 80,000 visitors each year. The observatory's website has mentioned that the exhibit asks is Pluto a planet? “By the time guests get to the end of the exhibit they will feel more confident in their answer. We try not to persuade people one way or another, just make sure all the facts are available”, said Lowell curator Samantha Thompson.