How might an asteroid impact change Earth's climate?

Answer 1

When the asteroid strikes Earth, it would throw up a great deal of debris into the atmosphere. The debris would block much of the sun's light, thus causing global temperatures to fall and decreasing the amount of plant life that could survive on Earth.

Answer 2

An asteroid impact could throw up a large amount of dust and debris into the atmosphere, blocking sunlight and leading to a cooling effect known as "impact winter." This could disrupt photosynthesis, reduce global temperatures, and cause widespread ecological changes. Additionally, the impact could release greenhouse gases and water vapor, leading to a temporary warming effect.