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Learner Reviews & Feedback for Astronomy: Exploring Time and Space by University of Arizona

3,420 ratings

About the Course

This course is designed for anyone who is interested in learning more about modern astronomy. We will help you get up to date on the most recent astronomical discoveries while also providing support at an introductory level for those who have no background in science....

Top reviews


Dec 14, 2020

I really enjoyed working through the modules of this course. The material was interesting and enlightening. The self-paced format worked well for me and I will look for similar courses going forward.


Mar 12, 2021

I really enjoyed working through the modules of this course. The material was interesting and enlightening. The self-paced format worked well for me and I will look for similar courses going forward.

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176 - 200 of 1,184 Reviews for Astronomy: Exploring Time and Space

By Robin E

Jun 11, 2021

This course was FANTASTIC!!!!!!!!!!!!!! I enjoyed it immensely. Dr. Impey is an excellent professor and he uses examples, analogies and video clips to make the coursework both understandable and enjoyable. I look forward to taking his Astrobiology: Exploring Other Worlds course. Thank you, Dr. Impey! Your astronomy course was a delight to this 65 year old grandma! On to astrobiology! Woo hooo!

By Kobus K

Jul 17, 2020

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.

By Paul C

Sep 5, 2020

I was so surprised by how much I enjoyed this class. Initially I was concerned I could keep up, but I completed the class 4 weeks early. I think what worked so well for me was the delivery.... Proffessor Chris Impey has a commanding and in depth knowledge of, well, everything, and his video sessions, and his text, was fascinating and engaging. I cannot recommend this class highly enough.

By Roman M

Jun 12, 2020

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!

By Abdullah A

Nov 17, 2017

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.

By Lakshmi S

Aug 28, 2020

Although it took me some time to finish this course, I would say this is the best one out there that covers Astronomy and its interdisciplinary fields. I had so much fun, 'cause the course covers everything from the basics to the topics that are really interesting and complex. I really loved Professor Impey's teaching, and the assignments and the videos. they were all awesome.

By Don M

Dec 14, 2016

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.

By Vivien S

Jun 26, 2020

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!

By Maria A C T

Jun 18, 2017

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


Oct 21, 2022

Este curso es excelente. Aprendí conceptos básicos sobre exoplanetas y sus características, telescopios y su histórica evolución, sobre el origen del universo y el modo en que los astronómos han resuelto enigmas como la edad estimada y el número de galaxias existentes. Me gusto mucho que el honorable profesor Chris Impey citara a canciones de Pink Floyd. Muchas gracias.

By Charlie H

Mar 20, 2021

I have enjoyed this course far beyond my expectations. From being in awe and wonder at the universe, I feel I now have a solid basic knowledge, understanding and greater appreciation of the universe. This has inspired me to study further and gain more in-depth knowledge of particular areas. I would like to offer my sincere thanks to Professor Impey and his support staff.

By Micah A

Nov 21, 2020

Wonderful course which goes into a broad range of topics within Astronomy, and is discussed by an instructor who is clearly very passionate about the topic. Lectures were also engaging and clearly a lot of effort was put in to make them more interesting than just slides with a talking head. Would highly recommend to anyone with even just a passing interest in astronomy.

By Camilo M

Feb 2, 2022

Although I understand science, physics and the universe are very large topics, this course gives you a great bunch of knowledge so you can continue learning through other sources. I loved the examples and the videos incorporated in every lesson. Professor Impey has a clever sense of humour and I enjoyed the pace of the course. Even his voice is really pleasing to hear!

By Alexces M T

Apr 23, 2021

This helps me to know more about the concept of exploring time and space, with this, it expanded my capabilities, knowledge and understanding about what is life outside our earth and what are the equipment, technologies used in discovering life outside. With this, I would like to thank the professor who's very good in delivering the ideas. Overall the course was great.

By Antonia T B

Oct 5, 2018

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

By Al B

Aug 5, 2022

I found this course to be immensely eye-opening in a number of meaningful ways. The balance of technical to practical/conceptual was perfect for me. My personal goal for undertaking this course was to understand the universe and to digest popular press news stories about current astronomy discoveries and theories. That goal was achieved to my great satisfaction.

By Папышева А С

Jun 12, 2020

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!

By Christine M

Feb 5, 2021

This course was extremely well-organized. Prof. Impey is an extraordinary teacher who delivered a wide array of information in a clear and interesting manner. There was a lot of material that gave a good picture of what Astronomy is about. I would highly recommend this to everyone, even for those without a scientific background. I look forward to learning more.

By Nupur J

Jul 7, 2020

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.

By Josephine R

Jul 5, 2022

I really enjoyed this course and thought it was excellent. It provided a perfect overview of astronomy, an area I’ve always be keen to learn more about. I did find it a little difficult in parts, especially not having a scientific mind, but I nevertheless persevered and got through it. Thanks to Distinguished Professor Chris Impey and the team at Coursera.

By Nico W

Apr 3, 2018

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

By Siddhant J

Jan 7, 2022

I really enjoyed the course, It covered all the topics I was curios about in astronomy in sufficient detail. I applaud the efforts taken by Professor Chris Impey in educating us. I also liked the audio and the background music during the audio-videos. This course ranks in the top courses I have ever taken in my academic career. (I have a Masters degree.)

By Katherine M

Oct 31, 2022

Loved this course. Not what I expected - I thought I would learn how to use my telescope . Cemented so many concepts and clarified so many things about the earth, the solar system and the universe that I remember hearing but never quite understood. Not to say I understood absolutely everything in the course, but it sure gave me a desire to learn more.

By Bob R

Dec 20, 2020

A wealth of information about very complex subjects, brought to you in a very understandable manner.

Chris Impey has probably triggered entheusiasm in a lot of students following this course.

The "understandable manner" argument does mean the quiz tests are relatively easy and test you mainly on whether you understood the concepts. They are not very hard.

By Md. I M

Jun 5, 2020

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....