Discover what a log-normal distribution is, its financial applications, and how to calculate it, including using Excel for ...

A true nuclear war has never happened - so how can we accurately calculate the probability of it happening in the future? Stock image of a mushroom cloud from a nuclear bomb.

To calculate the odds of some event, such as abiogenesis, occurring, astronomers first come up with a likely probability distribution of it—a best guess, if you will.