Iridium Satellite LLC is a company that owns and operates a network of satellites that are used to provide communication services all over the world.
You know how sometimes when you use your phone or the internet, the signal gets weak or disappears altogether? That's because the signals travel through the air, and there are places where the signal can't easily get through - like mountains, oceans, or forests.
That's where Iridium comes in. They have a bunch of satellites up in space that orbit around the Earth. These satellites are really high up and can see pretty much everywhere on the planet, even those pesky spots where normal communication signals have trouble getting through.
People use Iridium to make phone calls, send text messages, and even to connect to the internet when they're in remote or hard-to-reach places. It's like having a really powerful and reliable phone signal no matter where in the world you are.