Placeholder Image

字幕表 動画を再生する

  • Pluto’s moons.

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

  • 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!

  • Charon dominates the moons.

  • 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.

  • This is unique in the Solar system,

  • 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.

  • But what about the other moons?

  • 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.

  • But this will change soon.

  • 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.

  • This is the Pluto system,

  • and this is Jupiter.

  • It is bigger than the whole Pluto system.

  • Jupiter is big!

  • Okay, let’s wrap up.

  • So even if Pluto isn’t a planet,

  • it’s still very interesting and worth exploring.

  • In 2015 well know more.

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

  • Subtitles by the Amara.org community

Pluto’s moons.

字幕と単語

動画の操作 ここで「動画」の調整と「字幕」の表示を設定することができます

B1 中級

冥王星の月の説明 - MM#3 (The Moons of Pluto Explained – MM#3)

  • 575 62
    Shalott Euphoria に公開 2021 年 01 月 14 日
動画の中の単語