Try as they might, scientists can’t truly rid a space or an object of its energy. But what “zero-point energy” really means ...

Physicists are quietly rewriting the rulebook for how we might cross the gulf between stars, not by bolting bigger rockets to ...

Cosmologists are increasingly entertaining a radical possibility: that the cosmos might fold back on itself so that, on the ...

Our universe plays by certain rules, which originate from different branches of physics. But sometimes the rules seem ...

Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

Quantum mechanics and relativity are the two pillars of modern physics. However, for over a century, their treatment of space ...

Classical and quantum mechanics don’t really get along as the science of the subatomic can get, well, weird. Take, for instance, quantum entanglement, which says that the state of one particle can be ...