Can We Prevent an Impact Winter Extinction with Modern Technology?

I was certain somebody would have asked this before, but after scrolling through the Similar questions list I couldn't find any duplicates.

For this question, let's say that an asteroid or comet similar to the one theorized to have caused the extinction of dinosaurs has struck Earth in the modern day. The dinosaurs (as well as 3/4 of the planet and animal species) were killed from an impact winter, due to dust forming and blocking sunlight.

Could we prevent a massive extinction like this using modern technology? For this question, it's too late; the asteroid has already collided with the planet. Can we figure something out, or are we all already doomed?

I'm looking at this concept because I'm wondering how feasible such an event is for my story, but I want to know just "how dead" we'd all be.

Clarification: This question isn't about saving humanity, it's about saving as much life (animals, fish, birds, etc) as physically possible, so building space stations to escape won't work here. Because the creatures left on Earth would all mostly die off, which is still a massive extinction event.

Additional clarification: This is happening in the real, modern world. So the dinosaurs are already dead, I just used "Dinosaurs" in the question title to specify the type of extinction-level event in a way most people are already familiar with.

Humanity has as much time as they can use before dying off.

posted about 5 years ago

overlord - Reinstate Monica‭

6 reputation 27 0 1 0