On September 22, local time, according to foreign media reports, the first space planetary defense mission in human history is about to be carried out.

A spacecraft on NASA's Double Asteroid Redirection Test (DART) mission will hit the asteroid Dimovers on Sept. 26 in an attempt to change its orbit.

If successful, the mission could make it possible for a "killer asteroid" to veer away from Earth.

【Editor: Yang Yanyu】