The Catastrophic Consequences of an Asteroid Collision with Earth.

Scientists have presented a hypothetical scenario at the 8th Planetary Defence Conference in Vienna, Austria, to illustrate the potential devastation an asteroid could cause if it were on a collision course with Earth. The scenario begins with the discovery of a new asteroid, 2023 PDC, which is initially designated a "potentially hazardous asteroid" (PHA). The impact probability of 2023 PDC is initially just 1-in-10,000, but this steadily increases as asteroid tracking facilities on Earth continue following the rock, better constraining its orbit around the sun. The size of the asteroid is important because not only will it determine how much damage it does, but it will also determine what measures need to be taken to divert it, or whether this would be possible at all.