Cryocoolers are machines that keep sensors extremely cold so that satellites and space telescopes can take pictures on long-term missions. Whether we're looking back toward Earth or outward into deep space, the sensors that capture images require extremely low temperatures.
The Coolest Technology: Cryocoolers
![man in black shirt holding a cryocooler](/_next/image?url=https%3A%2F%2Fcdn.northropgrumman.com%2F-%2Fjssmedia%2Fwp-content%2Fuploads%2FThe-Coolest-Technology-Cryocoolers-facebook.jpg%3Frev%3Dcfcda1e408b149d39bca01865a18fbeb&w=1080&q=75)