親子觀星會

http://www.universetoday.com/108257/will-jupiters-great-red-spot-turn-into-a-wee-red-dot/#more-108257

2003 Feb – 18,420km (11,445 miles)
2005 Apr – 18,000km (11,184)
2010 Sep – 17,624km (10,951)
2013 Jan – 16,954km (10,534)
2013 Sep – 15,894km (9,876)
2013 Dec – 15,302km (9,508) = 1.2 Earth diameters

Read more: http://www.universetoday.com/108257/will-jupiters-great-red-spot-turn-into-a-wee-red-dot/#ixzz2sPK6MlU5

http://www.youtube.com/watch?list=UUNn1p7cpyoquq82qBrcoG8Q&v=dN-MBXp30Ao&feature=player_embedded
(http://d1jqu7g1y74ds1.cloudfront.net/wp-content/uploads/2014/01/Jupiter-Cassini-drawings_edited-1-580x240.jpg)