While
we absorb background radiation every day, standing next to a newly removed reactor spent fuel rod for a few seconds will kill you, David Lochbaum, the Union of Concerned Scientists» (UCS) nuclear safety engineer, calculates.
Ultraviolet light from early, blueish stars (illustrated) interacted with hydrogen gas, causing it to
absorb background radiation, and creating a signature scientists have now detected.
It's causing hydrogen to start
absorbing the background radiation, so you start seeing it in silhouette, at particular radio frequencies.»
The hydrogen atoms
absorbed the background radiation, and it's this change that the new study was able to detect as radio waves.
Not exact matches
Another possible explanation for the strong radio signal Bowman and the EDGES team discovered is that there's more radio
background radiation being
absorbed, rather than the hydrogen gas being colder than previously thought.