A single metallic boulder sitting in an ancient Martian riverbed is forcing scientists to rethink what they thought they knew ...

An engineer who once worked with NASA says he has built a machine that can push against gravity without burning a drop of ...

It also pushed them to tighten their standards, especially when the conversation shifts from “interesting chemistry” to ...

Astronomers have seen spacetime itself wobble near a spinning black hole for the first time. The discovery, revealed during a star’s destruction, confirms a major prediction of Einstein’s theory of ...