Science communicators have an increasingly broad range of tools for reaching diverse audiences, including social media, podcasting, vlogging or mixed/interactive media, as well as more traditional approaches such as public talks, experiments, science festivals, articles or books for both younger and adult audiences. However, widening participation and engaging with under-represented communities can remain a challenge. What lessons can be learned from experiences within different communities? How can we tailor outreach efforts to connect with traditionally under-represented or under-resourced groups? How can limited resources be put to the most effective use? How can we measure the short-term outcomes and long-term impacts of outreach activities? This session is aimed at exploring how planetary science can utilise both novel and rising traditional modes of science communication to engage with a broad range of communities and how the impact of these activities can be evaluated.