When looking at library bookshelves, you may sometimes see small labels with numbers like "913.6" or "596" stuck to the ...

So much is happening in astronomy these days that it’s hard to keep track of the cosmic zoo, much less how each object fits into the overall celestial landscape. Scientists typically organize their ...

The Rosgen Classification system developed by Dave Rosgen is easily the most widely applied river classification system used in the U.S. Its popularity is largely due to its codified nature, making it ...