Science 5 hours, 30 minutes It has recently come to light that a group of experts couldn’t stop a fictitious asteroid from hitting our Earth in a simulation exercise conducted by NASA, NASA started off with its 7th IAA Planetary Defense conference later last month along with the simulated “tabletop” asteroid impact exercise, led by NASA JPL’s Center for Near-Earth Object Studies (CNEOS). The asteroid impact exercise evolved over the five days of the conference. Day 1 started with the “discovery” of a fictitious asteroid named 2021PDC and was estimated to be 35 million miles (57 million kilometres) from Earth. Keep in mind that this asteroid is purely fictitious and was only used for the purpose of this exercise. It does not exist and is no threat to Earth.