recommend a website

stamweng

recommend a website
you can find some frequently discussed astronimic subjects shcu as balck holes, pulsar, and supernova there

http://imagine.gsfc.nasa.gov/docs/science/know_l1/sn_overview.html

BTW. some answers in reading 2772 is different with OG. Be careful.

gemj

以下是引用stamweng在2003-11-17 16:37:00的发言：
BTW. some answers in reading 2772 is different with OG. Be careful.

哪个？可以告诉我吗？