Our Lectures
are typically used to give presentations, although they can also be used for self study.
They run directly from our website and no software in your computer is needed apart from the webbrowser that you are already using.
Most of the Slide shows are accompanied by a narrative text file and/or handout(s) (in pdf-format) that can be downloaded and which contain background information. These attachments should be studied beforehand by the presenter for the best results or can be used as a study resource for self study. These documents can be downloaded from the "Resources" tab (top left) in each presentation.
Open any one of the categories below and click on the icon in the column "Run" (only visible when you are logged in) to open the show in a separate tab. Make sure to scroll down to see all our presentations.

Available Lecture Series
Individual Presentations
The Rhythmic Sky Course
In this course we discuss how we see celestial objects move in the sky and why this happens that way.
Version 5.
Exploring the Solar System Course
In this course we travel virtually through our Solar System, visiting planets, and many moons, minor planets, asteroids, and comets.
Version 5.
Leaving the Solar System Course
In this course we leave our Solar System and explore up to about 7000 light years around the Sun. We discuss major observation techniques and look at different types of stars and other objects that we find and their properties.
Version 5.
Exploring the Milky Way Course
In this course we travel up to about 500,000 light years and explore our home galaxy in detail.
Currently being updated to Version 5.
Going Deep Course
In this course we travel all the way out to the edge of the observable Universe.
Version 4.