读报
登录注册网站首页
 

Science

Questions answered

作者: USA Today
Aa
  • -   
  •    +
Here are some questions you may want to ask about the Pluto mission.

Why is the mission such a big deal?

No spaceship has ever visited Pluto. The Hubble Space Telescope can’t even give scientists an accurate reading of the dwarf planet’s size.
点击阅读全文
联系我们  |  诚聘英才  |  关于我们  |  版权声明
© i21st.cn   京ICP备2024066071号-1
 
选择报纸
选择报纸
关闭