Satnogs, short for Satellite Network of Ground Stations, is a way to listen to and track messages from satellites in space. Imagine you have a toy car you want to drive around the park. You can control the car with a remote control that sends out signals. These signals are like messages that tell the car what to do. Satellites in space work in a similar way. They send out messages that tell them what to do from Earth. These messages are sent from antennas on the ground called ground stations.
Satnogs is a group of people who built special antennas and software to help capture these messages from satellites in space. They use some common parts that they put together in a special way to create antennas that can receive signals from space. These antennas are like big ears that can listen to the messages coming from the satellites.
But, the antennas alone are not enough to understand the messages. That's where the software comes in. The group has created a special program that can take the messages that come from the satellites and convert them into something humans can understand, like a picture or a sound. This software is like a special translator that helps us understand the messages that are sent by satellites.
With Satnogs, people can track all kinds of satellites - from weather satellites to amateur radio satellites to even satellites that study animals. The group also makes all their data available to the public for free. That means that people like you and me can also listen and track messages from space just like the experts!