An amateur astronomer discovered Pluto 95 years ago today. The former planet will complete an orbit in another 153 years. On February 18, 1930, just two weeks after his 24th birthday, Clyde Tombaugh ...

Alan Stern encounters Kansas astronomer Clyde Tombaugh’s famous discovery of Pluto every day. Stern is the principal investigator of NASA’s New Horizons mission that launched on Jan. 19 to the small, ...

It's been 18 years since Clyde Tombaugh, Pluto's discoverer, passed away — but on Wednesday the late astronomer got a birthday present that would have made him beam with joy: the closest close-ups ...

We’ve launched probes all over the place. We’ve snapped and beamed back pictures of every spot in the solar system. Except Pluto. Call it a planet. Call it a dwarf planet. Either way, it’s the last ...

The Children's Museum of Indianapolis is set to open its newest exhibit, featuring one of the most popular children's shows of the last 20 years. The first-ever "Mickey Mouse Clubhouse" exhibit at the ...