What is the Aftermath of a asteroid collision?

When an asteroid strikes, it makes little rocks from the big rocks. If the asteroid is big enough, dust and smoke will blot out the sun for a couple of years. Bring a coat. After the fires are out, it gonna get cold. Keep track of how deep you have to dig to get to the frozen oxygen. Keep track of how deep you have to dig to the frozen animals that will be your food. Alternating layers of paper and aluminum foil make good insulation.