[I Heart Pluto Fest 2025 Audio]: 95 years ago this week, there's a 24-year-old, Kansas Farm Boy that had been working here in Flagstaff for about a year, and he had discovered a planet earlier ...

As climate change has led to more severe weather, wildfires, storms and more, many people are thinking about how to save what ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Pluto was the little planet that could — until it couldn’t. Discovered in 1930 at Lowell Observatory in Flagstaff, Arizona, ...

An ounce of Clyde Tombaugh’s cremated remains are aboard NASA’s New Horizons spacecraft, now on the final leg of its 10-year, 3-billion-mile space odyssey to Pluto. By late June, we’ll be ...

As Asteroid Day marks its 10th anniversary, U.S. Senators Kelly and Cornyn introduce a resolution to establish National Asteroid Day.

New images of Pluto are broadcast on a globe at Lowell Observatory in Flagstaff, Ariz., on Tuesday, July 14, 2015. American astronomer Clyde Tombaugh discovered Pluto at the observatory in 1930.

The designation is already used in other parts of the world to raise awareness for space science and planetary defense.

Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory in Flagstaff. Cold, dark and ...

Legendary Apollo astronaut Rusty Schweickart, astronomer Scott Manley and acclaimed author Mary Robinette Kowal, known for ...

Highlights in Flagstaff include the Lowell Observatory – where you can learn why Flagstaff is an International Dark Sky City – and Historic Downtown Flagstaff.

Lowell Observatory is ranked #2 out of 18 things to do in Flagstaff. See ... by peering through world-class telescopes and sitting in on lectures on topics like black holes and the history of Pluto.