Chinese satellites are using quantum messages to communicate between satellites and ground stations, making this the largest quantum network in the world and maybe even the galaxy. That we know of!
A quantum message is when one bit of teeny tiny information is sent to another place instantaneously and decrypted. You’ll forgive us this crude explanation. Researchers at the University of Science and Technology in China say that this network is “uncrackable.” To humans anyway. The aliens probably learned to read quantum communication in alien Kindergarten and are laughing at us for its simplicity.