冥王星

为什么冥王星不再是行星了?我知道这是旧闻,但还是让我很恼火。我从小就学过这个说法。我那受过高等教育的母亲曾经给我们上过九个披萨。直到我上六年级的时候,才有人告诉我这个说法不对了,而且她后来给我们上了玉米片……

0
0
评论 6
  • 个人资料图片
    Megan Burkett
    Right so annoying 
  • 个人资料图片
    LadyK
    I don't understand it either.
  • 个人资料图片
    lady grey
    I don't understand it anymore than I entirely understand your post! 😵‍💫
  • 个人资料图片
    StrawberrySwirl
    I agree! Like you should have made up your mind sooner instead of making the curriculum teach it's a planet only to have to reteach students that it isn't!
  • 个人资料图片
    Nicole Comstock
    Something to do with it's size. Since there are other things bigger than Pluto they thought it was easier to downgrade it rather than declaring new planets.
  • 个人资料图片
    Eric Etienne
    Easy, its so far away they thought that it had more mass than was there. Technology advanced and the images that showed the planetary body in the first place was inaccurate. Its more of a belt of gargantuan space rocks.