Radioactive decay is a fundamental process in nature by which an unstable atomic nucleus loses energy by radiation. Studying nuclear decay modes is crucial for understanding properties of atomic ...

Kyle Clavier, left, and Dan Clayton are helping develop a standardized screening method to determine the most important radioactive isotopes to monitor from all of those produced by an advanced ...

Short-lived radioisotopes such as aluminum-26 influenced early solar system heat, water retention and the formation of Earth-like rocky planets, according to meteorite analyses and models.

It's been seven years since a University of Hawaii telescope spotted a strange object crossing our solar system. One-quarter mile (400 meters) long and maybe ten times as long as it is wide, thus ...

Naturally occurring radioactive elements are substances whose atomic nuclei are unstable. To become stable, these nuclei spontaneously break down, or decay, by releasing energy in the form of ...