Ensuring that learning is participatory and even further democratized seems particularly important at a time when people are kept apart because of a COVID-19 pandemic that thrives on proximity. Whilst learning is based on exchanges, it also benefits from the existence of a learning community, the access to which needs to be equal and taking…

Described is a multidisciplinary group project for undergraduate students in astronomy and physics. The students design and build a simple radiotelescope subject to a number of realistic constraints such as fixed cost, use of a standard communications receiver, and buying of supplementary building materials off the shelf. (BT)