  The principle that research output should be open has, in recent years, been
in-creasingly applied to data and software. Licensing is a key aspect to
openness. Navi-gating the landscape of open source licenses can lead to complex
discussions.During ADASS XXIX in 2019 it became clear that several
groupsworldwide areworking on formalising the licensing of software and other
digital assets. In this article,we summarise a discussion we had at ADASS XXX
on the application of licensesto astronomical scientific software, and
summarise the questionnaire we distributed inpreparation. We conclude that this
topic is considered relevant and interesting by manymembers of our community,
and that it should be pursued further.
