China’s plan to divert apocalyptic asteroid

The video discusses the potential threat posed by asteroid Bennu, which could come close to Earth between 2175 and 2199. A Chinese study suggests using 23 Long March 5 rockets to deflect Bennu's path. The rockets would carry kinetic impactors to alter the asteroid's trajectory. Simulations indicate this method could shift Bennu by 1.4 times Earth's radius, reducing the risk of impact.

What is the purpose of the rockets mentioned in the text?

According to the simulations, by how much could the vehicles deflect a large asteroid?