It can take very detailed, microscopic-level pictures of objects by using microwaves. Most people think of microwaves as something that cooks food, but that's only one use for them.
Microwaves are actually an invisible form of light.
And microwaves can do much more than bounce around in an oven. Like radio waves, microwaves can be broadcast over very large distances. In fact, cell telephones work by receiving and broadcasting microwaves. The satellites in our sky also use microwaves to communicate with stations on the ground, and other satellites. A global telephone network based on such satellites will employ microwaves.