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

  The spacecraft on NASA's "Double Asteroid Redirection Test" mission will hit the asteroid "Dimophos" 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.

(produced by Liu Peng)

Responsible editor: [Liu Pai]