Postage Stamp for Pluto Discoverer Clyde Tombaugh
Astronomer Clyde W. Tombaugh discovered the planet Pluto on February 18, 1930. He was just 24 years old. Pluto was the only planet discovered in the twentieth century and the only one found by an Amer... continue reading »
"It's About Time! City and State Alta Loma, CA"
"yes City and State LA, CA"
"Way to go! A great American! City and State Huntington Beach, CA"
"Go PLUTO! City and State В"
"BOOOOOO to ex post facto planet definitions City and State Oxnard, CA"
"Dude let the man have a stamp he is a pioneer City and State Cypress, California"
"What a wonderful addition this would be!! City and State Mission Hills, CA"
"i am doing this for bean City and State northridge ca"
"about time City and State В"
"I've got my fingers crossed for you Bean! City and State Sherman Oaks, CA"
"GO PLUTO City and State Los Angeles, CA"
"for bean"
