NASA to probe asteroid that might hit Earth
NASA is planning to probe the asteroid Bennu which might hit the Earth’s surface between 2175 and 2196. Discovered in 1999, the 500-metre, 60-million-ton asteroid, which moves at a speed of over one lakh kilometre-per-hour around the sun, can cause an impact equivalent to three billion tonnes of explosives. Researchers have estimated the chance of impact at about one in 2,700.