In a University of Kentucky laboratory, three small spacecraft stand-ins slid across low-friction air tracks, nudging and pulling one another without thrusters, propellant, or physical contact.

I then increased the diameter to 15 cm, but the Arduino boards, breadboards, batteries, solenoid, and wiring still could not fit comfortably inside. Eventually, I produced a larger 20 cm version.

Vagrant is a tool for building and managing virtual machine environments in a single workflow. With an easy-to-use workflow and focus on automation, Vagrant lowers development environment setup time, ...