Radiation within the visible spectrum can appear black if it is low in power – more specifically, lower in power than its ...

A 2,000-year-old Herculaneum scroll buried by the eruption of Mount Vesuvius is filled with lost words that scholars can now ...

As planets pass in front of their parent stars as viewed from Earth, they cause a tiny dip in the amount of starlight we ...

F OR SOLDIERS at the front, electromagnetic defences are as vital as air: invisible when present, and disastrous when not. In ...