The future of space tourism and supermassive black holes will be among the topics discussed at a public discussion in Aberdeen on Tuesday.
Some of astronomy's most significant mysteries, theories and questions will be covered at the lecture hosted by Astronomer Royal for Scotland Professor John Brown.
Professor Brown is the tenth Astronomer Royal for Scotland and was appointed by the Queen in 1995. He is also a Regius Professor of Astronomy at the University of Glasgow.
His talk launches the new Café Scientifique Shire series developed by the University of Aberdeen in partnership with TechFest-SetPoint.
The lectures aim to provide a public forum for debate around highly topical issues in science.
Dr Ken Skeldon of the University of Aberdeen said: "Professor Brown is a world-leading authority in the area of Astrophysics and his talk - which will span a full spectrum of issues from space travel to black holes - promises to provide a fascinating start to the new Café Scientifique Shire series.
"The aim of Café Scientifique Shire is to provide the public with the chance to gain real insights from leading lights in the world of science and engage in discussion and debate.
Professor Brown will speak before an audience at Banchory's Woodend Barn.
The event begins at 7pm and is free to attend.