Through the sometimes blinding storm of executive orders and memorandums in the opening days of President Trump’s new ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

How is matter different from mass? These and other questions about the deepest levels of physics, answered inside.

Our physics expert picks his top-five equations, plus a scheme to supply US power needs with a bucket of baseballs. Thanks, ...