"beam that power back down to Earth in the form of microwaves."
https://www.thedrive.com/the-war-zone/35167/we-talk-to-the-scientist-whose-revolutionary-power-beaming-experiment-is-flying-on-the-x-37b
"microwave-powered propulsion for real-world applications."
"wireless power transmission via microwaves for a free-flying drone and determined the efficiency of this process."
https://www.sciencedaily.com/releases/2021/08/210803105540.htm
"the maximum control distance for the microwave‐driven robot is 800 mm."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9561789/
"Researchers in Japan are using microwaves to power free-flying drones, a project that could possibly pave the way for a new type of rocket."
https://www.space.com/microwave-powered-rockets-drone-project
"Microwaves beamed to such a craft would be converted to electricity by special antennas inside the vehicle, or refocused by those antennas to points outside the vehicle, to power its propulsion system and energy storage system."
https://www.nasa.gov/vision/universe/roboticexplorers/catch_a_microwave.html
"In 1897, when Tesla presented his Dynamic Theory of Gravity, he said that all bodies emit microwaves whose voltage and frequency are determined by their electrical contents and relative motion.
Over one hundred years ago, Nikola Tesla managed to measure the microwave radiation of our planet and concluded that it is only a couple of centimeters in wavelength.
Tesla continues saying that the frequency and voltage of earth’s microwave radiation were influenced greatly by the velocity and mass of our plant. The gravitational interaction with other celestial bodies like the sun was determined by the interaction of the microwaves between the celestial bodies."
https://www.ancient-code.com/nikola-tesla-ether
"cosmic microwave background (CMB), also called cosmic background radiation, electromagnetic radiation filling the universe that is a residual effect of the big bang 13.8 billion years ago."
https://www.britannica.com/science/cosmic-microwave-background