There is a free public lecture in Preston on 28th September 2017;  the Jeremiah Horrocks Autumn Lecture. The speaker is Professor Lucie Green, and the title is “15 million degrees: journey to the centre of the Sun“.

It will be in the Darwin Lecture Theatre, 6.30pm start. Although it is free, you will need to apply for a ticket in advance:

https://www.eventbrite.co.uk/e/jhi-autumn-lecture-tickets-36742739523