Abstract: Craters are the key features of a planet’s surface, often referred to as the "living fossils" of the solar system’s history. However, due to significant variations in the distribution of ...

A very popular natural attraction in the United States has been closed to the public. And it won’t be open again for a few years’ time. Announced last year via publications such as The Weather Channel ...

President Donald Trump has nominated Marine Corps Lieutenant General Francis L. Donovan to become the next commander of U.S. Southern Command, setting the stage for a leadership transition at one of ...