A random thing I stumbled upon and thought was interesting: NASA runs a website where you can see the current send/receive status of each antenna in the DSN (Deep Space Network) as well as the spacecraft it’s communicating with.
The DSN is a network of antennae at three locations around the world (California, Spain, Australia) that send and receive messages from various satellites and other spacecraft. They’re roughly 120 degrees apart from each other to give complete coverage. The Wikipedia page has a ton more info.