Andrew Dimmock gave a presentation with the title “Solar Wind: What is it and how does it affect Earth and other planets?” at the Biotopia museum in Uppsala as part of the ‘Astronomy Day and Night’ festival, which is a space festival with events throughout Sweden. The festival is built up by organizers around Sweden who draw attention to astronomy and space travel in different ways. This year ‘Astronomy Day and Night’ had the theme of all the solar systems of the Universe.