A new book by two well-known Manchester physicists explores the real meaning behind the iconic sequence of symbols that make up Einstein’s most famous equation. ‘Why Does E=mc2?: (and Why Should We ...

“The mass of a body is a measure of its energy content,” Einstein concluded, suggesting that radioactive materials like radium may provide a means to test this idea. “If the theory corresponds to the ...

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Why is the expansion of our Universe accelerating? Twenty-five years after its discovery, this phenomenon remains one of the greatest scientific mysteries. Solving it involves testing the fundamental ...

It is one of history’s more irritatingly on-brand coincidences that Albert Einstein was born on Pi Day, as though the universe itself decided that if it was going to manufacture the patron saint of ...

In a fitting cap to the World Year of Physics 2005, MIT physicists and colleagues from the National Institute of Standards and Technology (NIST) report the most precise direct test yet of Einstein’s ...

Over 100 years ago, Albert Einstein grappled with the implications of his revolutionary special theory of relativity and came to a startling conclusion: mass and energy are one, related by the formula ...

Spacetime is often described as the stage on which the universe unfolds, a four-dimensional blend of space and time that bends, stretches and shifts as matter and energy move through it. However, ...

For 90 years, physicists have tried to solve the equations that constitute Albert Einstein’s theory of general relativity — the concept that matter, space and time are intertwined. But some of ...