PHOENIX - Pluto may soon be named the state planet of Arizona, as a bill that aims to make that happen advanced at the State Capitol on Jan. 31. House Bill 2477 is sponsored by State Representative ...

From possible ice volcanoes to twirling moons, NASA’s New Horizons science team is discussing more than 50 exciting discoveries about Pluto at this week’s 47th Annual Meeting of the American ...

Researchers simulate how an ancient impact left a pear-shaped dent on Pluto. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, ...

Rather than a vast ocean, Pluto’s heart might be hiding a huge, heavy treasure. Computer simulations suggest that an object about 730 kilometers wide, slightly larger than the asteroid Vesta, could ...

Even early humans quickly recognized the difference between the stars and the planets, with the objects now known as planets appearing to travel across the night sky over the course of the year, or ...

The New Horizons mission to Pluto isn’t rewriting the textbooks, says NASA spokesman Dwayne Brown. “It is writing the textbooks,” he said, as he closed a Friday press briefing with mission scientists.

Researchers think they have solved the mystery of how the distinctive heart came to be — and it could reveal new clues about the dwarf planet’s origins Researchers think they have solved the mystery ...