an amazing course, starting from the history of the astronomy, leading towards the future of our existence, full of interesting notions about the universe.

It's the perfect course for who does know nothing or very poor about astronomy and it doesn't require math or physics or biology knowledge in advance.

I really enjoyed this journey with professor Chris Impey and it really engaged me with the astronomy.

Many thanks!

I fell in love with cosmology a few years ago and I am attending high-level conferences on the subject. However, I soon realized that I was lacking the bases of astronomy and that acquiring them would certainly alleviate my sufferings. The objective has been perfectly met, with this very comprehensive course. Prof Impey shows an excellent sense of pedagogy, which is not so obvious in the community of scientists.

In my opinion, This course is really useful for the people that have an extreme interest with astronomy and also the curious people want to exlore the masive universe. And i'm one of these people. In addition, I'm really happy when i found out this website while i was surfing my newfeed, Thank to this program, it's really lightful for a lot of questions always be held in my mind but know i have lighted up a lot.

This course has allowed me to enter the study of astronomy and space, opening a new universe for me.

The quality of content, materials, videos, examples and resources have made it very easy to understand something really complex.

I want to congratulate and thank Chris Impey and his entire team for their work, helping to spread this valuable knowledge.

Thank you very much.

Toni Mascaró

Muchas gracias.

Toni Mascaró

I liked this course very much and I like to thank Professor Chris Impey And mentor Christy Read for teaching me and clearing my doubts.Thank you Professor Chris Impey and Christy read.Through this course I can get introduced to Microobservatory and Galaxy zoo.Also I know about the Teach astronomy material from this course.And I would like to thank coursera for giving all these nice courses.Thank you all.

Exploring Time and Space brought me closer to how important it is for human life to exist in a habitable zone, from the thin vulnerable gas surface layer of a life supporting planet to beyond the bow shock of a solar system. We have access to a time machine. We are running out of time, discovering sooner than later the dynamics of our universe will assist human mankind's seed of propagation.

It is very informative and logically constructed course with good slides, examples and suitable movies and animations. Some of the information was familiar to me, but anyway it was very interesting to learn some interesting facts. I'll try to use the consequence of the topics and presentation of all the information in my aditional course on astrophysics. It was very exciting! Thank you!

It is really great course from all aspects. The course content designed to be very interesting and covering most aspects of Astronomy. With no doubt, I strongly recommend for everyone from whatever background to enrol to the course and learn as much as I learnt and see how great is our universe is and how much human do not know. Looking to the universe, tell us how great is our creator.

I found this course to be very informative and enjoyable -- and demanding in terms of time. I am still catching-up on the text and am learning more and more even after completing the course. I recommend it to anyone interested in learning more about astronomy in the present. Chris is a very effective teacher, and his lectures/presentations are very interesting and informative.

This course was fantastic. I learned so much. The structure of the course was very clear and easy to understand. Nevertheless, there were demanding exercises which convey the material very well. Thanks to Chris Impey and the rest of the team who offered this great opportunity. And thank you all for the structured and well explained videos and material. I am greatly thankful!

The course is excellent. It provides an introduction to different aspects of astronomy, in an entertaining, comprehensive and intelligent way. The materials are very complete, and the homeworks are nice, and some of them especially interesting to carry out. The script of the videos and the teacher are very clear and didactically very good. The course fulfills expectations

This course is fascinating! Professor Impey is awesome. The lectures are very clear and amusing. I did many Astronomy courses and this one is really one of the best. Also, the Quizzes are easy, not impossible like other Astronomy courses. There are several assignments but they are easy and fun to do. Thanks a lot and many greetings from Spain / Antonia Tejeda Barros

I would like to express my gratitude to the University of Arizona for an opportunity to take such course. It was an awesome experience. And I am deeply thankful to Chris Impey for guiding me in this course, for sharing his knowledge with me. I came here almost with nothing and I go with a full pack. These 11 weeks were unforgettable journey. Thank you very much!

My first and best astronomy learning experience. The course was like storytelling and required great attention and listening skills. It was fun in beginning and turned into big knowledge basket head scratching lot of mental work. But it was crazy learning.

Profesor Chris have created a very attractive and systematic course.

Thankyou for such a lovely space ride.

Naturally, I would rate this 5 stars. It was an excellent introduction - not only to the subject matter, but also to Coursera.

I will definitely do more courses - hopefully more by Professor Chris Impey. Remarkable tutor, people able to attend courses with him in person are fortunate.

Coursera is an amazing platform, and I will be doing many more courses

One of my best course ever in my life. Because this astronomy is my curiosity from when i'm teenager. Even,to explore the knowledge about universe & its imaginary activities always attract me & further it will always astonished me.I have a dream to go to NASA & work for explore the solar system at the same time with gather vast space knowledge also....

Awesome experience and good leading experience gain for me, without courser it won't be happen Specially about this course Chris Impey is the good Instructor, good Scientist, and good Researchers In the whole life. l learn lots of things like connection between Human earth, their nature and the Space history at home in India. Thanks for everything.

Course starts form very basic contents up to cosmology, astrobiology and so on. It is important to take in mind that reading materials contain a lot of information therefore additional time has to be dedicated in order to read everything, time it takes to read supplementary material does not mach with the time specified when a lesson starts,,

An incredibly diverse, interesting course delivered in an easy to understand way by Professor Impey. The weeks just keep getting more interesting, and the ideas more abstract and on the frontier of current research. Would wholeheartedly recommend for anyone even vaguely interested in any aspect of astronomy - it's definitely worth doing.

An extraordinary course which generally attracts lots of space enthusiasts like me and develops the interest in astronomy to take it up as a career. Since its not easy to study these kinds of subjects thoroughly at bachelors level especially in countries like India, its really a boon for the people out there and across the globe.

Astronomy: Exploring Time and Space, is a fantastic course! It offers the most in-depth explanations with great diagrams and infographics related to astronomy and astrophysics. I would highly recommend this course for amateur astronomers and students who are interested in learning the nature of the solar system and the universe.

I thought the course went well beyond my expectations and provided me with not just the knowledge of Astronomy but a certain wisdom about it that I never would have imagined when I first signed up. I will look at the night sky differently and with more understanding than I ever have before. And in this way I want to learn more.

Professor Impey covers an extensive subject using a clear and instigating language. The assignments and tasks proposed helps a lot the comprehension and make you search for more information.

One of the best online courses I have already had.

Congratulations to Professor Impey and all team that produced the available material.

I didn't quite know what I was signing up for when I stated this course. It goes into a lot of different aspects of astronomy that has given me a greater knowledge and understanding of our universe. While giving me the questions I need to explore. Chris Impey talks in a way you can understand and I will miss the lectures.

Excellent course for learning about the basics of astronomy. Amongst others it covers subjects as the history of astronomy, our sun and the solar system, comets, galaxies, quasars, pulsars and black holes. The course uses video's which clearly explain various topics with sheets and additional reading material provided.