A quantum communications satellite proved its potential in 2017
Intercontinental video call sets distance record for cryptography via entangled photons
![satellite beaming light down to telescope in China](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/12/122317_6_EC_quantum-communication_main.jpg?fit=860%2C460&ssl=1)
SPACING OUT Quantum communication through space is possible thanks to a Chinese satellite that beams particles of light down to telescopes like this one in Xinglong, China (shown here tracking the satellite’s location with a laser).
Jian-Wei Pan