题  目：Impacts on Earth and what they tell us about the parent bodies

　　报告人：Professor Iwan P. Williams(Queen Mary University of London (QMUL, UK))

　　摘  要：Over time, there have been many impact on Earth. Most do not survive passage through the atmosphere, but some do and can be investigated as meteorites in the laboratory. All contain information regarding the Parent Body and this talk will review our knowledge of this subject.

　　时  间：11月22日下午2:00

　　地  点：紫台517会议室

　　联系人：董瑶（83332059）

欢迎大家积极参加！

　　                                                      紫金山天文台学术委员会