Europe's Ariane 6 heavy-lift rocket is scheduled to launch today (Nov. 4) for the fourth time ever, and you can watch the action live.

The hold-down firing of the first stage engines was the final major test of the New Glenn rocket before launch day. Blue ...

"Callisto, Themis and Skyhopper are different demonstration programs contributing to the development of a European reusable ...

After decades of service, the M4 carbine’s reign as the U.S. military’s standard rifle may be coming to an end. The SIG Sauer ...