Almost 10 years ago, a NASA spacecraft was able to take several photos of Pluto, known for decades as a planet before it was ...

FLAGSTAFF, Az. – Whether Pluto is officially a planet is the least interesting thing about the runt of the solar system, astronomers will tell you 95 years after the discovery of the fascinating ...

Over millions of years, that atmosphere escaped into space. Pluto is the only place in the solar system where we can study something similar happening today, Stern says, even though its atmosphere ...

Pluto Has the Biggest Heart in the Solar System It was only after images from 2015 arrived that Pluto secured a place in my heart. That's because Pluto, it turns out, has a heart bigger than mine ...

Pluto isn’t the only dwarf planet in our solar system's outer reaches. Now is an ideal time to look for the egg-shaped Haumea, says Abigail Beall ...

The first clue came from Pluto. The oddball of the solar system, it dips far above and below the pancake-like plane in which the eight planets travel; it swoops on an elongated orbit that takes it ...

More than just dazzling streaks of light as meteors, these ancient fragments are among the oldest materials in our solar system, originating from planets, asteroids, and comets. Most meteorites ...

Pluto is not very big. It is only half as wide as the USA and is smaller than our moon. The solar system contains hundreds of dwarf planets, including Ceres, which can be found in the asteroid belt.

New Horizons principal investigator Alan Stern says, "Pluto is showing us a diversity of landforms and complexity of processes that rival anything we've seen in the solar system." As the craft ...

The solar system is also home to many other cosmic bodies including asteroids, moons and dwarf planets such as Pluto. What's this? Oh noooo… Stella: You should know where all the planets are ...