When an asteroid strikes, what else can we do except let the Earth wander?

When an asteroid strikes, what else can we do except let the Earth wander?

The first move: hide. If the asteroid is too big to be dealt with, or if it is too small to be worth dealing with, we can hide in a bunker. As for what the bunker should be built like, you can use your smart brain.

The second method: bombing - using nuclear bombs to smash asteroids or detonating a nuclear explosion near asteroids to use radiation to evaporate the surface material of asteroids and deflect the asteroid's orbit. Who knows where opening the nuclear Pandora's box will lead mankind? Besides, what if it is blown to pieces? What if it cannot be blown to pieces? What if the pieces fall to other places and hit flowers and plants?

The third method: collision ~ It is said to be the most reliable defense method at present. However, it is still a gap of six orders of magnitude for a few tons of aircraft to hit an asteroid weighing millions of tons. In my opinion, it is still like hitting a rock with an egg ~

The fourth method: dragging ~ Maybe you can only drag an asteroid less than 10 meters. Do you know how heavy a 10-meter asteroid is? It's about 1,000 tons. Use Zidane's formula to calculate the fuel~

The fifth move: Pull ~ Use gravity to slowly pull the asteroid in the direction of its advance to change its orbit. Well, actually, there is gravity between us too ~

The sixth method: burning ~ This is a promising method, because the energy can come from the sun, and the laser can evaporate and vaporize the surface material of the asteroid, pushing the asteroid to change its orbit. However, the technology is still a bit far away ~

The seventh method: spray ~ Use electric propulsion to spray high-speed ion flow on the surface of the asteroid to change the momentum of the asteroid ~ By the way, the spacecraft will run after spraying ions, it doesn’t matter, install another set of engines on the other side and spray in the opposite direction at the same time ~ Think about it ~

The eighth trick: paint ~ apply a layer of "paint" on the surface of the asteroid to change the reflectivity of the asteroid, thereby changing the thermal radiation properties of the asteroid, and changing the orbit of the asteroid through the Yarkovsky effect. Wow, look at this brain hole ~

The ninth move: Throwing ~ This move is called mass drive, which is to dig soil on the asteroid and then throw it out with all your strength ~ Come on ~

If the above nine tricks are not enough, try your best to find out~