The NASA chief's speech comes on the heels of the space agency's announcement that it would conduct an asteroid impact simulation to identify critical aspects of disaster response in the event of such a cataclysmic scenario. NASA Administrator Jim Bridenstine took the stage of this year's Planetary Defence Conference on Monday to issue a stark warning: people should be ready for a major threat from a killer asteroid that could collide with Earth if our planet is not better protected. "We have to use our systems, use our capabilities to ultimately get a lot more data, and we have to do it faster. We know for a fact that the dinosaurs did not have a space programme. But we do, and we need to use it", he said. Bridenstine continued by saying that normally the idea of a giant interstellar object smashing into Earth is met with a "giggle factor", but people should not have that false sense of security somehow imposed on them by a myriad of themed Hollywood blockbusters. "We have to make