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Astronomy: Exploring Time and Space に戻る

アリゾナ大学(University of Arizona) による Astronomy: Exploring Time and Space の受講者のレビューおよびフィードバック



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....



Jun 27, 2019

Amazing introductory course and covers wide variety of topics ranging from history, to astronomy to astrobiology. Really great of amateur astronomers and for anyone who is remotely interested in it.


Jun 21, 2020

This course help me to learn many interesting thing. And sir was fabulous in teaching .And all material and stuff including videos and photos make learning very easy. Fully satisfied by the course


Astronomy: Exploring Time and Space: 51 - 75 / 561 レビュー

by Angel F A

Mar 31, 2020

Muy interesante y clarificador. Muchas gracias profesor

by Viduranga S L

Oct 20, 2019

A great course. Than you for making it.

by Donjeta

Dec 20, 2019

Its Amazing! Oh my god.

by Andrew J G

Nov 25, 2019

Excelent course!

by Adriana V B

Dec 09, 2019

excelent course

by Abin C T

Nov 27, 2019


by Robin D

Oct 27, 2019

It was an interesting course. What I would like to see is a course offered that is a bit more intensive. Perhaps with a bot of mathematics involved. What I see offered is entry level survey courses that are quite easy and then advanced courses that require knowledge of second or third year mathematics. A course or a certificate (4-5 courses) that bridges the gap between the two would be a benefit. Thank you

by Amit S

Jan 05, 2020

It was interesting and gives you knowledge at a large extent, the only thing lacking is a role of mathematics in this course.

by Ravishankara B

Sep 18, 2016

Good one. Detailed.

Too much of video clips from television etc. Can avoid those.

by Emmanuel M L

Feb 27, 2020

it would help if the course have subs in spanish

by Omar H

Dec 19, 2017

Entertaining, but very basic. Suits a beginner with very little knowledge of physics.

by Anil K

Apr 17, 2016

This course is bad!

I had come upto week 4. While Chris Impey is knowledgeable and good, the course structure is very poor and leaves a lot to be desired. I would venture to make some suggestions:

a. Restrict each video to a max of 7 minutes. More than that makes one sleepy.

b. Reduce the number of videos in each module to a max of say 6.

c. Instead of having Chris expound it like an audio reading, please include some slides, pictures,tables so that the matter to be learnt becomes self evident and Chris doesn't have to speak so much. A good example is the Coursera "The Global Financial Crisis", which I am also doing currently.

d. If you feel all the material in this course has to be studied, then to achieve the objectives in (a) and (b) above, divide this course into two parts, Astronomy: Exploring Time and Space - part I & II.

e. The written assignments are very simple and do not require any mental resources other than memory. Can you make the questions more challenging? For example, in Telescopes (Assignment 2), can you not ask a question like "In addition to Atacama, Chile, using Google earth, which other parts of the globe may be suitable for installation of ground based telescopes?" or "To obviate the blurring effect of the atmosphere, discuss the possibility of high altitude balloon based telescopes?" or "What do you feel about the fact that since today's mobile phones have high computing ability, their components can be used to make a low-cost space based interferometric telescopes?"

Kudos to Chris and his team! On the whole, knowledge wise, this is a good course.

by Aitor C C

Dec 08, 2015

I can't have my certirficate and already I pay for it!

by Sarah

Mar 10, 2020

Really fantastic! I'm an amateur, took the course with my high school daughter who is thinking of a career in astronomy so we wanted to explore basic concepts and understand what astronomers do. This was perfect for that purpose. I'm not sure she'll finish, but I found it so interesting I did. The course is just the right balance of videos, readings, activities. The videos are also well-done and it helps that it is not just a talking head the whole time, or reading of off a slide deck. I appreciate the sometimes fun and humorous asides in videos. Only critical feedback is that it seems to get out of date fast... the videos should have had time stamps on them or avoid terms like "recently", "about to" because we don't know if you are talking about something 5 years ago, or today. Hope to make time for more courses in the futur, thanks for doing this Chris and the Steward Observatory Team (and the teaching assistants, poor things, who have to wade through all of the comments from people confused about how to submit assignments... when there were actual questions, they answered promptly, clearly and well.)

by Richard E

Aug 24, 2017

Note that I am probably an unusual student in that I have both T.A.ed and lectured in the past. I would give this course at least 90% ("A") for a survey of Astronomy course [no Math or Physics prerequisites]. The professor (Dr. Impey) is quite skilled in communicating with non-majors and encouraging them to learn more about Astronomy and Cosmology. Also, the free textbook material superbly matches the course and contains links to more detailed study [excellent!] I'd like to try a course for majors with him as well. Maybe, I'd have to become a UofA student remotely from Dallas?


Issues in course (How much is due to Coursera limitations?):

(1) Not enough lab work. Lab reinforces lectures and it is simply a lot of fun, especially for the novice.

(2) The writing assignments are reviewed by inexperienced peers -- we are unqualified and also this practice might tempt some to collusion.

(3) Some of the lectures need an update. Hopefully, this will happen in time for the next session.

by Robert E K P

May 19, 2017

Astronomy: Exploring Time and Space is an excellent way to gain an overall view of the science of Astronomy. The course contains just the right amount of rigor to challenge the student and to continuously stimulate the desire to know more about each of the topics copies. There isn't any math or physics to worry about although the role both of these areas play in the study of the universe and the stars and objects it contains is described when necessary. There are peer reviewed writen assignments that help develop a better understanding of the subject material. The course also has some of the best and most involved mentors of any Coursera course I have taken. They are also available to answer questions and are very knowledge of the course materials. Dr. Impey's lectures are clear and very enjoyable to watch and the accompanying course materials are also excellent.

by Surya

Jun 03, 2018

Truly beautiful course, if you've got that tiny bit of love for the night sky or physics just dive into it. It's just perfect. Its the perfect blend of fun references, clippings and simulations with absolutely great teaching imparting so much knowledge and info, every little thing from the videos to the script to the theories and concepts are laid out just picture perfectly. I couldn't have asked for more, it's one of the best courses there is out there if not the absolute best one! One heck of a journey I'll never forget! Thank you so much for everything Prof. Impey! Just owe so much to you! You've put together the best course I could've asked for! You're one of the best teachers ever! Thanks a million University of Arizona! (PS If anyone back in Arizona see's this please, please let the Prof know!) Cheers!

by Marc R

May 09, 2020

This is a wonderful course, and I wholeheartedly recommend it, as a layperson with a lifelong interest in astronomy who has always wanted to formally study it. It is a good stepping-stone to more advanced or specialised courses, and the material is engaging and well-presented. The content ranges from introductory concepts, through an exploration of the solar-system, stars and galaxies, to relativity and cosmology, and the course ends with an intriguing and fascinating look at astrobiology and artificial life. The commitment and passion of the convenor, Prof Chris Impey, to his subject is apparent at every stage of the journey. Regular quizzes, short written assignments, discussion forums and videos, and exercises in both citizen-science and remote-viewing with online telescopes keep one engaged throughout.

by Pedro J d C

Dec 08, 2016

I am very happy to have completed the course. I was able to learn a lot about various aspects of astronomy, especially galaxies and globular clusters that are objects that call my attention. I was able to read much of the material provided in teachastronomy, thank you for the kindness of making the material available. I watched all the videos of Professor Chris and I was able to follow well due to the availability of the subtitles in English, this was important. The interviews I could not follow completely by the lack of subtitles. This was a great opportunity for me that likes astronomy, but because of the distance that I live from the great centers of study, it is very difficult to access good and reliable information. I am very grateful and congratulate the institution for making this course available.

by Michael F

Apr 27, 2018

What an amazing class and enjoyable experience this has been for me personally. I feel that now I can at least understand some basic fundamental properties of the cosmos. I have been a follower of Dr. Carl Sagan for many years and Professor Stephen Hawking (RIP) as well. I thank my lucky stars (pun intended) for wonderful teachers like professor Chris Impey who has created a remarkable presentation of facts, theories and ideas that we know about the universe and salts our curiosity to continue exploring the big questions of who we are, where we came from, and what does it all mean. That you professor Impey for all you and so many others introduced in this class have done.

All the best,

Michael Fredericksen (Indiana, USA)

by Damir G

May 26, 2020

Really great course, enjoyed it a lot, it's easy to follow and a lot of fun. As it turns out it's already 7 years old and the subject of Astronomy has been developing very rapidly that some of the material already requires to be updated. The fun videos to lighten up the subject are great but most of them look like they are from 80's or 90's and the quality of the picture on those are of the same old VHS tape quality. The subject 10 about the Cosmology is a little hard to follow, watched it several times but still hard to get some of the topics and the examples are sometimes confusing. Other than that it's a really great course which I recommend to everyone. Thank you very much for your hard work!!!

by hamid m

Mar 24, 2019

thank you professor chris for making my day(s). really, when i see all the useless things people do, it is your astronomy class that puts things in perspective. plus, i hate to say this on a public forum; playing your videos helped put me to sleep at night, kinda like a bedtime story. truly, i have separation anxiety wondering how i'm going to be able to fall asleep now. the biggest problem i experienced with this was trying to keep track of my videos, because it would autoplay and cycle through an entire week. if coursera could put an option in there for that. i ended up playing my videos in reverse chronological order so when i fell asleep it would cycle through all the ones i had already watched

by Matko Z

Oct 04, 2016

I am a First year master in software engineering, but also a really curious "kid". In my search for interesting course related to astronomy I found this one.

Although I am only half way through the course I state that this is the most compelling course I have taken on Coursera. Since I have more then some knowledge of scientific method, physics and other topics talked about in the course, but not as much in astronomy I find the course tailored for me. Especially taking into account that this course is in the right spot between popular knowledge and a little bit of science and engineering.

Prof. Impley is excellent in explaining, even amazing at some points :)

by Jennifer R

Jun 15, 2020

This course is fascinating, engaging and of high quality; Professor Impey is obviously interested in sharing his field with a wide audience. Although familiarity with physics and mathematics helps with understanding the material, no math or science background is required to enjoy and complete this course. The lecture videos are interspersed with photographs, diagrams, and videos. An online textbook is available to further delve into the subject matter. Two interesting projects are assigned, involving actual science online. And to top it off, Professor Impey had live Q&A sessions on YouTube live. Highly recommend to anyone curious about our universe!

by Utkarsh T

Jun 08, 2019

This course has a deep impact on my vantage point about the obvious things that I have always taken for granted without considering the possibility of a scientific basis behind them. It helped me understand the fundamentals not only in astronomy but also real-life day-to-day things and I am so glad to write about historical viewpoints and beliefs that this course has provided me.

I am so impressed by the work of Professor Chris Impey and his team. You people have made it possible such an organized course for all the students(especially who are not from astronomy background).

Looking forward to be a part of any other similar course in the future.