Residents of Washington, D.C., and parts of Virginia were startled on Sunday afternoon by an explosive noise that reverberated overhead, which officials later confirmed was a sonic boom produced as ...

NASA's F/A-18 and F-15 jets are commonly used as chase planes, but are sometimes used for research. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A SpaceX Super ...