"After months of careful checks and tests, the number they found was 0.127 particles per cubic centimeter, or about 120 hydrogen atoms in a space the size of a quart of milk.
This result confirmed a 2001 study which used Voyager 2 – about 4 billion miles away – to measure how much the solar wind had slowed by the time it arrived at the spacecraft. The slowdown, largely due to intervening interstellar medium particles, suggested a matching interstellar hydrogen density, about 120 hydrogen atoms in a quart-sized space."
https://www.nasa.gov/solar-system/new-evidence-our-neighborhood-in-space-is-stuffed-with-hydrogen/
"Antennas are the single most sensitive satellite element to interference, because they operate by deliberately turning electromagnetic fields into electric currents and vice versa."
https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Electromagnetics_and_Space_Environment
"Tesla says that the source of this energy is our Sun. He concluded that the Sun emits small particles, each carrying so small of a charge"
https://www.nuenergy.org/nikola-tesla-radiant-energy-system/
"Electromagnetic (EM) waves which Tesla declared is a free source of power that is “everywhere present in unlimited quantities”."
https://www.apparentlyapparel.com/news/nikola-teslas-black-magic-wireless-touring-car