RE
Aug 30, 2015
This was a very interesting class taught in such a manner that an undergraduate student majoring in any area would find interesting and educational, their is very much to learn for anyone
CN
Jan 25, 2016
The best course ever.! it really has the scientific detail that you do not find anywhere else in a clear simple and didactic way. The instructor is an amazing educator.
By derek j s
•Feb 27, 2018
https://www.nasa.gov/image-feature/jpl/pia22240/splitting-slope-streaks
Sorry Professor David>>>your presentation on the 'dark streaks' on Mars' crater sides is outdated. I personally have studied these some 10 years ago having followed the 3 rovers and the lander 10 years ago and watched the water sublimate from the Phoenix digs, at that point I knew 'instinctively' that the dark lines were sand. Please see NASA link above.
I can not continue your course for the obvious reason that some other data will be outdated.
However, I truly have enjoyed your presentation method and if and when your updates to other lectures are complete I will endeavor to complete the lecture course.
Thank you.
yt
derek scarpelli
Canada
By Khan Z A
•Jul 25, 2020
The lectures are informative but too long and fail to keep the listeners interested. Overall very knowledgable for anyone interested in astronomy.
By Raul Ð
•Apr 6, 2018
Something worthy.
By Aidan K
•Mar 31, 2020
Something is broken in the course software - only the first week's page shows up, and that with the wrong course name.
Useless.
By Zulfiqar a k
•Aug 4, 2020
i need my certificate plz on completing ts course
By Md. F R
•Jun 25, 2020
a disgusting course, there is no certificate