李政道先生悼念追思会今天上午在上海举行 - 新浪网



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This shark can live for over 400 years and we finally know how - BGR
Astronauts return to Earth after longest stay on ISS - BBC.com

Bright comet Tsuchinshan-ATLAS could be visible without a telescope for the 1st time in 80,000 years. Here's how to see it this week. - Livescience.com
The Origin of the Asteroid That Killed the Dinosaurs - Nautilus