When the late American astronomer Clyde W. Tombaugh discovered planet Pluto 76 years ago this month, he opened the gateway to an unknown region of ancient, icy objects unlike any worlds in our solar ...

Editor's note: This story has been updated with information about a Tombaugh exhibit and panel discussion at NMSU. LAS CRUCES - Tuesday marks the 90th anniversary of Clyde Tombaugh's discovery of ...

Ninety years ago today, Clyde Tombaugh, a young astronomer working at Lowell Observatory in Flagstaff, Arizona, discovered Pluto. In doing so he unknowingly opened the door to the vast “third zone” of ...

The New Mexico Museum of Space History announced last week that the transfer of the Clyde W. Tombaugh Science Education Center was completed in January. The Tombaugh Center was previously owned and ...