Not too easy. Not too difficult.
I took the course on-line and worked great for me. I was able to fit it in my schedule accordingly and was not overwhelmed. Getting the assignments ahead of time gave me the opportunity to be able to schedule accordingly.
The highlights was the information on the stars. I did not know exactly how the stars are formed and how they can potentially become a black hole. Maybe I did but don't remember, but with this course I will not forget.
Hours per week:
Advice for students:
You will gain lots of knowledge and it is not a waste of time, very interesting and gets you wanting to know more.