Planetary news,06-5／行星新資訊06-5

CKYan

Credit: NASA/Spitzer
(1) Past Climate Change Cannot Be Tied to Earth Passing Through Galactic Plane.  地球過去的氣候變化與地球跨越銀河平面並無直接關聯．
http://arxiv.org/ftp/arxiv/papers/0906/0906.2777.pdf


(2) The latest research has concluded that the Tunguska explosion was almost certainly caused by a comet entering the Earth’s atmosphere. 通古斯爆炸可能由彗星造成．
http://www.newswise.com/articles/view/553688/

香港天文學會
月球行星組