NASA describes the gateway as "a lunar-orbiting, crew-tended spaceport" that would also include a habitation module and docking ports for the Orion crew spacecraft and separate cargo spacecraft.

The ESPRIT refueling module is part of the Gateway’s core structure. The module is 4.6 m in diameter and 6.4 meter in length. It weighs around 10 tonnes on Earth filled with fuel. The ESPRIT ...

Basically, the core technology of a Pi has been repackaged and released in a new form, aimed at those creating their own PCB. You can now fit the core of the Pi into your own larger system. The ...