What would happen if a Kessler syndrome is triggered?

We shouldn't dare to trigger Kessler syndrome, because doing so can be disastrous. Kessler syndrome refers to a situation whereby the density of objects in the Low Earth Orbit (LEO) becomes increasingly high with a possibility of massive cascade when two objects collide in the space and as a result of this, the collided objects split into pieces and in turn increases the possibility of more collisions.

This consequence is so clear, triggering Kessler syndrome will lead to a massive cascade and this isn't good for the earth and it's inhabitants. Having too much of space debris in the Low Earth Orbit can lead to further collisions and consequently results to more space debris in the Low Earth Orbit. At this point it will be practically impossible for new satellites to be launched into the space and any attempt to do so might lead to more collisions with the already saturated space.