Einstein came up with his famous equation showing a relationship between energy and mass... but what does it really mean? The answer might surprise you.

If you could convert the mass of a paper clip entirely to energy, how big a punch would it pack? Einstein's most famous equation, E = mc 2, indicates the calculation is straightforward ...

The difference or "missing mass" is converted into energy in accordance with Einstein’s equation E=mc². Because c is very large, a small amount of missing mass turns into a large amount of energy. The ...