An open-source 240-antenna array to bounce signals off the Moon

https://moonrf.com/

Open Source meets Outer Space

Cool, how full array compares to the single antenna placed on Starlink satellite ?

How would that be a useful comparison? Aren't the use-cases too different?

Not only is the moon >100x farther away (even accounting for near-horizon satellite angles), but you're also trying to bounce a signal off it as a passive reflector, which is harder than just transmitting something an active lunar receiver could detect and re-transmit back.