Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff. Cold, dark and distant, it was named after the Roman god of the underworld.

Here's a look at Pluto's history. Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff, Arizona. Cold, dark and distant, it was named ...

Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff, Arizona. Cold, dark and distant, it was named after the Roman god of the underworld.

I've been to Disney World 20 times, and the last time we took our grandson with us. I discovered new rides and details seeing ...

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Here are some of the most amazing discoveries that New Horizons and previous Earth-based observations have produced of Pluto. Being so cold, Pluto boasts different kinds of ices that planets ...

Satellites come in all shapes and sizes, but there aren't any that look quite like SPHEREx, an infrared observatory NASA ...