Gamma thunderbolts from a nearby supernova could destroy more than half of the earth’s protective ozone layer.
According to a report of the NASA, this danger may become real. Gamma thunderbolts arise from cosmic explosions of superlatives.
This is one of the most energetic phenomena in the universe. If the earth should get hit by one of these Gamma thunderbolts, the renewal of the ozone layer would take over 5 years.
The ultraviolet rays of the sun could hit earth almost unhindered and with that, destroy almost all life on earth.