It was 20 years ago that our solar system lost a planet. Well, it didn’t really go anywhere, but Pluto is no longer a planet because it’s been ...

NASA’s New Horizons data suggests liquid nitrogen recently flowed onto Pluto’s surface through cracks in Sputnik Planitia.

New Horizons images reveal liquid nitrogen rising through cracks on Pluto's Sputnik Planitia Liquid nitrogen flows on Pluto's ...

I mean, a planet is not easy to define, and coming up with a definition that everyone would agree to was, you know, probably not going to happen. Like when planetary scientists state that Pluto is a ...

Earth’s neighbor still has secrets that science is trying to figure out, and one of them is potential signs of life.

A new dwarf planet has been discovered in the dark outer reaches of the solar system, far beyond Pluto, according to astronomers. The 450-kilometre-wide object named 2012-VP113, was found orbiting ...

Researchers used New Horizons images to identify evidence that liquid nitrogen may have flowed from beneath Pluto’s famous heart-shaped glacier.

Originally published on 425. Oliver Popa, a 9-year-old who hails from Edmonds, is releasing his second book, “Am I a Planet?, ...

Originally published on 425. Antique toy and doll enthusiasts ought to check out Lynnwood’s Antique Doll and Toy ...

A decade after NASA’s New Horizons spacecraft swept past Pluto, scientists have found something startling in its old images.

As Pluto edges further away from the sun, the chilly temperatures are causing its atmosphere to condense onto its barren ...

Planetary researchers analyzing images from NASA’s New Horizons spacecraft have found evidence that liquid nitrogen may still ...