Two decades ago, the International Astronomical Union—which defines and names celestial bodies—redefined the criteria for ...

The “most vocal” Pluto advocate has been the planetary scientist Alan Stern. “Science isn’t about voting,” he said in 2016 of ...

NASA chief Jared Isaacman said at a US Senate hearing that he supports restoring Pluto's status as a planet after a ...

Is Pluto a planet? At a U.S. Senate committee hearing this week, NASA's chief shared his thoughts on the decades-long debate.

On Tuesday, responding to a question during a testimony to a US Senate committee, NASA administrator Jared Isaacman said he ...

It's been 20 years since Pluto was declassified as the ninth planet in our solar system, and many people wish it had never lost its status. A recent comment from NASA Administrator Jared Isaacman ...

Could Pluto be repromoted to planetary status? On Tuesday NASA administrator Jared Isaacman told a Senate committee hearing that he is “very much in the camp of make Pluto a planet again.” NASA is ...

Pluto just picked up a powerful ally: the head of NASA. Testifying before a Senate panel on the 2027 NASA budget Tuesday, ...

A 10-year-old’s passion for Pluto has caught the attention of NASA thanks to a compelling, viral letter on social media. NASA now says it is "looking into" reclassifying Pluto as a planet. If that ...

Pluto is a tiny icy world way out at the edge of our solar system. In 1930, an American astronomer named Clyde Tombaugh discovered it, and for a long time, everyone called it the ninth planet. Then, ...