A clear warning has been issued by ISRO Chief S Somnath, who cited past impacts and the possible destruction asteroid strikes could bring to Earth. The tragic Tunguska incident on June 30, 1908, serves as a sobering reminder of asteroids’ devastating potential. Over the Tunguska Forest in Siberia, an asteroid or comet detonated in Earth’s atmosphere, causing a 12-megaton explosion that destroyed 80 million trees over 2,150 square kilometres. The heat and shockwave from the impact travelled kilometres.