大连市今起实行住房限购政策 抑制投资投机行为
百度 中国正在为如何回应做准备，比如对从美国进口的飞机、机械设备以及大豆等农产品征收相应的关税，向世界贸易组织报备自己的举措等，同时它也有可能采取一些行动悄悄地安抚特朗普，削减不断膨胀的贸易盈余。A collection of TED Talks (and more) on the topic of NASA.
Talks about NASA
Exclusive articles about NASA
5 1/2 reasons you shouldn’t miss the solar eclipse, straight from an over-the-moon astrophysicist
Here’s why should stop what you’re doing and look up at the sky on August 21, according to astrophysics researcher Jedidah Isler.
Posted Aug 2017
How should we protect and preserve our history — on the moon?
As new moon-going efforts ramp up, space explorers must remember to safeguard what humans left there previously -- and also study it before it’s too late.
Posted May 2017
The out-of-this-world strategies in place to stop an asteroid impact
NASA has a plan to combat rogue interstellar objects -- and even a Planetary Defense Officer. Asteroid hunter, space scientist and writer Carrie Nugent reveals the array of tactics, from the tested to the far-out.
Posted Mar 2017