冥王星既神秘面紗（Why Pluto is called Pluto?）

點解冥王星叫「冥王星」（pluto）？因為似布魯圖（Pluto）囉
that’s why it is called Pluto (but the dog or the “planet”? )



https://twitter.com/scottjohnson/status/620967387613917185

引申延讀，包括點解我地要探索呢個唔再係行星（planet）既矮行星（dwarf planet）：

https://phycat.wordpress.com/2015/07/15/冥王星和學問/

http://technews.tw/2015/07/15/our-closet-distance-with-pluto/

http://www.bbc.co.uk/news/science-environment-33524589

http://www.bbc.co.uk/news/science-environment-33569565