Minggu, 03 April 2022

Whoops, Humans Made a Space Barrier Around Earth

Forget the Kármán line—there's a human-made space barrier to wonder about, first observed by NASA in 2017. The mysterious zone of anthropogenic space weather is caused by specific kinds of radio waves that we've been blasting into the atmosphere for decades, but experts say the expanding band actually helps protect humankind from dangerous space radiation.

ScienceAlert reports that NASA first observed this belt in 2012. The agency sends probes to explore different parts of our solar system, including the Van Allen Belts: a huge, torus-shaped area of radiation that surrounds Earth. The donut shape follows the equator, leaving the North and South Poles free.

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