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23 October 2019
Radio noise maps show where emergency communications could get tricky
Rather than riding in trucks to maneuver around the streets of Boston, the team got in their steps. They carried radiofrequency monitoring equipment in backpacks sporting a towering radio antenna, a recording device and an aluminum “radio-proof box” containing a laptop – a key feature to prevent the computer from contaminating their data. In total, the contraption weighed 15.4 kilograms (34 pounds).
21 November 2012
Huge signal-distorting space bubbles spawn along equator as night falls
In our Sun’s most active years, enormous snake-like bubbles of plasma emerge overhead on Earth at nightfall. You can’t see them, but these bubbles can bend and disperse radio waves, interfering with communications networks. Now, a satellite soaring low in Earth’s orbit has observed the continuous birth of these evening-time bubbles for the first time, and scientists have started to chart their evolution.