2. Well, .... NASA has sort of a plan for a plan...
...to track all the extinction magnitude asteroids and, someday, to figure out the best approach for disturbing the orbits of threatening asteroids, and, after that, to implement the technology for deflection.
Sounds like a great plan for a plan for a plan to me!
Don't get me wrong, the NASA dudettes and dudes are the right folks to do this, once the powers that be remove the hobbles from research.
Researchers from Johns Hopkins University’s Applied Physics Laboratory are preparing a decade-long, $350 million project to propel a rocket into the asteroid Didymos as it passes close to Earth. If successful, it would be the first time an asteroid is knocked off course by human intervention.