Hi everyone,
There are some new astronomy courses on the MOOC list in particular https://www.mooc-list.com/course/astronomy-discovering-universe-open2study Astronomy: Discovering the Universe seems a good introduction only 4 weeks.
There are a number of other courses if you scroll down as well though some are not currently running though those with a date in the last couple of weeks or marked as ‘self-paced’ should be Ok.
For those who are not aware these courses are free though you may have to pay for a certificate at the end if you want one.
John Murrell
Astronomer Without Portfolio
Website www.JohnMurrell.org.uk