The European Southern Observatory (ESO) has released a stunning 80 million-pixel image of the star cluster RCW 38, as captured by ESO's Visible and Infrared Survey Telescope for Astronomy (VISTA), ...

Get up to speed on gamma rays, the radiation responsible for creating the Red Hulk in Captain America: Brave New World.

Mandatory annual training for personnel who access radiation posted areas (non-radiation workers). Radioactive material and x-ray machines are safely used in a wide variety of research programs at the ...

Donald and Melania Trump arrive at the White House ahead of the inauguration ceremony on Monday in Washington, D.C. (Andrew Harnik/Getty Images) Donald Trump was sworn in as the 47th president of ...