The spacecraft is currently approaching the outer boundary of the solar system as it prepares to cross into interstellar space.

Twenty years after Pluto lost its planet status, the debate is suddenly alive again. After a 10-year-old wrote to NASA asking ...

Dark streaks along Pluto’s giant nitrogen glacier may mark places where liquid nitrogen recently reached and flowed across the surface. Computer models suggest nitrogen could melt beneath the ...

A 24-year-old observatory assistant from the Midwest discovered Pluto. Clyde Tombaugh, born in 1906 in Streator, Illinois, ...

For decades, Pluto remained one of the most mysterious objects in our solar system, until July 14, 2015, when NASA's New Horizons spacecraft became the first mission to visit it up close, capturing ...

Pluto just picked up a powerful ally: the head of NASA. Testifying before a Senate panel on the 2027 NASA budget Tuesday, Administrator Jared Isaacman made clear he wants the icy world reinstated as a ...

Pluto lost its planethood for a very specific reason. Whether or not that’s a good reason depends on who you ask.

Since it was stripped of planetary status, Pluto’s defenders have been fighting the decision – and they’re only getting more passionate ...

Those who supported Pluto’s demotion included Neil DeGrasse Tyson ...