Between 50 and 1,000 kilometers above our heads is the ionosphere, a layer of Earth's upper atmosphere consisting of charged ...

The radio frequency spectrum is a limited resource for which there ... All of these measurements are essential to understanding terrestrial weather, climate change, space weather hazards, and threats ...

Mysterious radio signals detected emanating from Antarctica's ice have left particle physicists baffled. The pulses were detected by the Antarctic Impulsive Transient Antenna (ANITA)—an array of radio ...

Dale explained that when the sun’s rays are interrupted or out of sight, the ionosphere becomes ionized which allows for the radio frequencies to reach even further distances. “If you ever use ...