Any uncertainty in the calculation of the object’s orbit causes variations in the predicted solution. Instead of one precise ...

Illinois schoolchildren should be able to tell time by the end of first grade and know how to calculate probability by middle school graduation under a plan that would create unified national ...

The impact probability describes how likely a hazardous asteroid is to hit Earth. For example, if the impact probability is 1%, it means that in 1 of 100 cases, it hits Earth.