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作为小航天迷,你一定知道,近几年我国的探月工程发展得非常棒。可是,我们的航天员什么时候才能登上月球呢?别急,登月之前,我们先建个前哨站吧!美国国家航空航天局准备在月球背面或者地月拉格朗日平衡点上,建立有人类照料的深空前哨站。拉格朗日平衡点指的是,在两个大的天体的引力作用下,能够使其他小的天体保持平衡的点。这里说的地月拉格朗日平衡点,特指地球和月亮之间的五个拉格朗日平衡点之一的L2点。L2点是在两个天体连线上,靠近较小的天体的平衡点。地月L2点位于月球的背面,距月球6万多千米,但距地球44万千米。
As a small space fan, you must know that in recent years China’s lunar exploration project has developed very well. However, when will our astronauts board the moon? Do not worry, before we embark on the moon, let’s build a outpost! NASA is going to set up on the back of the moon or Earth Lagrange balance point Deep space outpost with human care. The Lagrange equilibrium points to the point at which the balance of other small objects can be balanced by the gravitational forces of two large celestial bodies. The land-Lagrange equilibrium point here refers specifically to the L2 point of one of the five Lagrange equilibrium points between Earth and the Moon. Point L2 is the connection between two celestial bodies, close to the balance of smaller celestial bodies. L2 is located on the back of the moon, more than 60,000 kilometers away from the moon, but 440000 kilometers away from the earth.