Nonetheless, in a surprising number of cases its behavior resembles that of an ordinary classical solid ...

Primordial helium from the beginning of the solar system may be stuck inside Earth's solid core, new research suggests. The findings could have implications for a long-standing debate about how ...

In a solid like this brick ... a bit like marbles in a bucket.This is why liquids can be poured. In a gas, like helium, particles are widely spaced apart and move quickly and random directions.

For the first time, scientists have directly measured a weak r-process reaction using a radioactive ion beam, shedding light ...

In a solid like this brick ... a bit like marbles in a bucket.This is why liquids can be poured. In a gas, like helium, particles are widely spaced apart and move quickly and random directions.