At the center of most large galaxies, including our own Milky Way, sits a supermassive black hole. Interstellar gas ...

Detecting radiation is a fundamental necessity for national security, but doing so effectively and at a distance is a tall ...

The scans are estimated to cause 2% of annual cancers — but new measures could keep the radiation levels in check.

Skeptics love to bring up one particular topic regarding long-term human space exploration—radiation. So far, all of the ...