Name: The Moons of Pluto Explained – MM#3
Uploaded: 2015-06-12T12:03:17.000Z
Duration: 2 min 5 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Today, Pluto is best known for losing its status as a planet.

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But actually, we have discovered a few new things about it in the last few years.

The main one: it has more moons than we thought.

At least five, but there might be even more!

Because of its size and mass, it’s way more influential than the other four.

Charon is so massive in relation to Pluto

that the center of mass of the Pluto system is outside the dwarf planet.

So the moons are not orbiting Pluto, but a point outside of it.

and some scientists even categorize Pluto and Charon as a double system,

instead of a dwarf planet orbited by moons.

Charon is composed either of layers of ice and rock, or it’s a giant dirty iceball.

If it weren’t orbiting Pluto, it would itself be a dwarf planet.

Well, to be honest, we don’t know that much about them.

Pluto is incredibly far away from Earth, so it's hard to get detailed information.

In 2015, the space probe New Horizons will

reach the Pluto system after a 9-year journey

and finally give us detailed information about Pluto and its moon buddies.

Let’s throw in some infographics just for fun.

This is Pluto and its moons to scale, including spaces between them.

It is bigger than the whole Pluto system.

it’s still very interesting and worth exploring.

If you can’t wait that long, watch the other Moon May videos.

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The Moons of Pluto Explained – MM#3

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