Many people hold Pluto close in their hearts and refuse to abandon the assertion that it is a planet, although science ...

The dwarf planet also possesses ice ridge terrain ... with some methane. Pluto's low gravity, which is a little more than one-twentieth that of Earth's, causes this atmosphere to extend much ...

Planet or not, Pluto is useful for understanding how planets ... Eventually, forces like gravity will cause the material inside the disk to concentrate those grains and create asteroids, dwarf ...

The year was 2015. After traveling billions and billions of miles through the Erebus, New Horizons encounters the boatman, and the somber lord of the departed. The spacecraft could have been ...

Now officially labeled a “dwarf planet,” Pluto may have lost its title ... flew at an average speed of 36,000 mph, and it got a gravity assist from Jupiter to pick up speed.

it is a spherical shape and it is big enough that its gravity cleared away any other objects of a similar size near its orbit. Pluto only meets two of the criteria required to be a planet.

According to the IAU, a planet must: Orbit the sun (Pluto does this). Be spherical in shape (Pluto is round due to its gravity). Clear its orbit of other debris (Pluto fails this). Pluto shares ...

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 ...