It is known to scientific community that there are several million asteroids in the solar system and some of them are capable of striking the Earth. Although the probability of the Earth being struck by a large asteroid is extremely small, the consequences of such a collision can be catastrophic.
It is well recognized that being a global issue, all countries together have to work out mitigation plan from asteroid hit to earth. The Department of Space is participating in various forums like Inter-agency space debris coordination committee, Planetary Defense conference etc., to address the issues and work out the mitigation plan. Various technical options considered and evaluated by international community to keep away asteroids from the Earth are Kinetic Impact, Gravity Tractor, Solar Concentrator, Laser Deflection and Nuclear Explosion.
The Minister of Science & Technology and Earth Sciences Shri S.Jaipal Reddy gave this information in reply to a written question in the Lok Sabha today.