Many theories are rock-solid: Scientists have just as much confidence in the theories of relativity, quantum mechanics, ...

Few ideas in modern science have reshaped our understanding of reality more profoundly than space-time—the interwoven fabric of space and time at the heart of Albert Einstein's theory of relativity.

The concept of time travel, filled with magic, has long danced on the boundary between science and science fiction. From ...

Scientists say fragments of energy may be the fundamental building blocks of the universe—not particles and waves.

The blackboard was not the only piece of history left by Einstein during his visit. He signed a 1713 first edition of ...

Textbooks give strange, imprecise explanations of where things happen in quantum mechanics. Consistency with gravity needs a fresh approach.

How exactly did the universe start and how did these processes determine its formation and evolution? This is what a study ...

Interestingly, though Einstein seems to have accepted Spinoza’s theory of God, a Herem was not imposed on him, though some Rabbis still appear to uphold the Rabbinical view of God.

He shared the Nobel Prize in Physics for his work on gravitational waves, which helped confirm Einstein’s general theory of ...

String theory is perhaps the most high-profile candidate for what physicists call a theory of everything – a single ...

Asking what existed before the Big Bang is often dismissed as meaningless, since traditional physics breaks down when pushed ...

A survey of Scientific American’s century of quantum coverage helps explain the enduring popularity of strange physics ...