![NASA Mars lander prepares for liftoff(1/5)](http://www.ecns.cn/hd/2018/04/09/e01c597e2a45441db9e650f188f19b02.jpg)
This artist's concept depicts the stationary NASA Mars lander known by the acronym InSight at work studying the interior of Mars. (Photo/NASA)
This artist's concept depicts the stationary NASA Mars lander known by the acronym InSight at work studying the interior of Mars. (Photo/NASA)