Background radiation is the invisible radiation that is always present in our environment. It comes from a variety of sources, both natural and man-made. Natural sources include cosmic rays from space ...

The giant confinement building encapsulating the Chornobyl nuclear reactor that exploded nearly 40 years ago is smooth and curved—built with scientific precision. Installed in 2016, the structure was ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest updates on rocket launches, skywatching events and more! You are ...