Scientists are starting to get a clearer picture of how Pluto’s strange, hazy atmosphere works. Their latest discovery, concerning waves rippling through the dwarf planet's atmosphere, means that ...

Imagine throwing a baseball. Easy, right? Maybe you've already done it a few times. Now imagine throwing a baseball on the moon. Maybe you've seen enough videos of astronauts bouncing around up there ...

Pluto might have hogged much of the spotlight historically, but the dwarf planet is actually part of a double act, alongside its biggest satellite, Charon. A new analysis suggests that Pluto used its ...

In late August 2006, new discoveries upended a traditional, comfortable way of viewing our solar system: Scientists decided Pluto wasn’t a planet after all. Some space nerds like to mourn Pluto’s loss ...

In 2015, NASA’s New Horizons probe flew by Pluto as it orbited the Sun in the solar system’s Kuiper Belt. New Horizons captured seminal images of the dwarf planet, including many highlighting one of ...

Watch a ball throw on each planet in our solar system, plus Pluto and the moon, below. Imagine throwing a baseball. Easy, right? Maybe you've already done it a few times. Now imagine throwing a ...

In a post yesterday, I talked about the Moon orbiting the Earth, and the Earth’s gravitational sphere of influence, called its Hill sphere. If you have an object orbiting the Sun (like a planet, say), ...

This one comes from SnowGhost's question about the lack of impact craters on Pluto and allowed me to use one of the most unlikely titles you're ever going to see in the physical sciences. Pluto is not ...

When NASA first considered a mission to Pluto more than 15 years ago, the idea was to visit the last and most distant of the nine planets, an oddball whose icy composition, tilted orbit and tiny size ...

Maybe Pluto is a planet after all. The icy ball at the outer edge of the solar system was considered a planet from its discovery in 1930 until 2006, when a global astronomy organization made the ...