An in-depth exploration of Russia’s emerging hypersonic weapons designed for tactical aircraft, focusing on why the Zircon is ...

Tucson-based Raytheon Missiles & Defense and partner Northrop Grumman successfully completed a key flight test of a hypersonic missile being developed for the Defense Advanced Research Projects Agency ...

The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...

The Chicago Manual of Style is an American English style guide published by the University of Chicago Press. The Manual’s guidelines for publishing, style and usage, and citations and indexes—known as ...

In 1942, the Manhattan Project needed to create a chain reaction—a crucial step toward proving that it would be possible to make an atomic bomb. The scientists achieved this sustained nuclear reaction ...

The Dark Forest theory is one proposed solution to the famed Fermi Paradox, which has bewitched astronomers for more than half a century. To put it concisely, the paradox asks if the cosmos is nearly ...