Teaching university physics through the internet is not new, but a new course providing the same service for secondary school students is the first of its kind in Hong Kong. Taking advantage of the fast and affordable broadband internet in the region, some university courses have been converted to a cyber curriculum suitable for secondary school students. In the spring semester of 2002 an astronomy and astrophysics course has been offered for the first time to secondary school students in Hong Kong via the region's first Cyber University project for secondary schools. The course Introduction to Astrophysics and Astronomy is a general education course offered by the department of physics at the Hong Kong University of Science and Technology (HKUST). In this article, we will describe our experiences in designing and running the course, discuss its effectiveness in comparison with traditional classes and suggest some possible future directions.