A soap bubble’s swan song is a quiet “pfttt.” Put your ear next to a soap bubble, and you might hear a high-pitched sound as it bursts. Now, scientists have characterized that sound using an array of ...

A quiet revolution is taking shape in the world of physics, and it doesn’t rely on exotic particles or massive particle colliders. Instead, it begins with something much more familiar—sound.

In northwest China, China successfully tested the Feitian 2, a new hypersonic vehicle. This test marks a major step forward in high-speed flight technology. Feitian 2 is not an ordinary aircraft. It ...