When 10-year-old Kaela Polkinghorn asked NASA to make Pluto a planet again, she never expected the agency's top official to ...

Arizona – and Flagstaff specifically – has long considered itself the home of Pluto. After all, Percival Lowell, the namesake of the state's most prominent observatory, was not only one of the first ...

The New Horizons mission provided the first close up images of Pluto revealing a complex and active world that completely changed scientific understanding of distant planets ...

Pluto has not ceased to meet one of the basic requirements for being considered a planet. This was announced on April 13 by ...

NASA's administrator wants to reclassify Pluto as a planet, reigniting a 20-year controversy over its status in our solar ...

A 10-year-old girl’s emotional letter to NASA urging Pluto to be reinstated as a planet has gone viral, drawing a response ...

As a space scientist, every time I go outside with my family, I tell my children to look up at the sky. The front door of our home looks southeast, and on winter nights the constellation Orion hangs ...

For no explainable practical reason, humans are enamored with – and even empathetic toward – specific inanimate objects. Our first car. A choice coffee mug. And for a particular subset of the ...

After a 10-year-old wrote to NASA begging for Pluto to be re-instated as a planet, Administrator Jared Isaacman appears to be ...

Pluto returns in this episode of SolarBalls, where its adventures seeking out the mysterious dwarf planets continue. Enjoy ...