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 ...

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 ...

This past July, the Heritage Auction House listed a lot consisting of several items of historic interest. Among a saucer once owned by Martha Washington, a lock of Abraham Lincoln’s hair, and a ...

FLAGSTAFF – Clyde Tombaugh sat in the Orpheum Theater that fateful night in February 1930, waiting for clouds to pass before the 24-year-old astronomer could return to Lowell Observatory to confirm ...

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 ...

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 ...

LAS CRUCES – It’s shaping up as another big year for our favorite dwarf planet and its discoverer, Clyde Tombaugh. A year after the New Horizons probe, with Tombaugh’s ashes on board, made its closest ...