University of Arizona
Astronomy: Exploring Time and Space
University of Arizona

Astronomy: Exploring Time and Space

Taught in English

Some content may not be translated

239,579 already enrolled


Gain insight into a topic and learn the fundamentals

Chris Impey

Instructor: Chris Impey

Top Instructor


(3,636 reviews)

Beginner level
No prior experience required
43 hours to complete
3 weeks at 14 hours a week
Flexible schedule
Learn at your own pace

Details to know

Shareable certificate

Add to your LinkedIn profile


21 quizzes

See how employees at top companies are mastering in-demand skills


Earn a career certificate

Add this credential to your LinkedIn profile, resume, or CV

Share it on social media and in your performance review


There are 11 modules in this course

Here you can find all of the introductory information, course syllabus, and current announcements.

What's included

2 videos6 readings1 quiz1 plugin

Science combines logic and evidence to increase our understanding of the natural world, including remote and inaccessible regions of space and time.

What's included

18 videos3 readings2 quizzes1 peer review

Astronomy is the oldest science, and its history shows a growing realization of our insignificant status in a vast and ancient universe.

What's included

7 videos3 readings1 quiz

A continuing revolution in telescope design and construction is giving astronomers an unprecedented set of tools for exploring the universe.

What's included

17 videos3 readings2 quizzes1 peer review

Astronomers harvest information across the electromagnetic spectrum, using spectra to measure the composition of distant objects and diagnose extreme physical conditions.

What's included

16 videos3 readings2 quizzes

Space probes have visited most planets in the Solar System, and orbiters and rovers are homing in on the habitability of Mars. Space exploration is entering an entrepreneurial phase that might let us venture beyond the Solar System.

What's included

19 videos3 readings3 quizzes

In the last few years, thousands of extrasolar planets have been discovered, including some that are Earth-like and possibly habitable.

What's included

11 videos3 readings1 quiz1 peer review

Stars are the crucibles of heavy element creation, and the chaotic regions of their birth are being understood though long wavelength observations. Gravity is the ultimate victor in the life story of any star, leaving behind the exotic end states of white dwarfs, neutron stars, and black holes.

What's included

13 videos3 readings2 quizzes1 peer review

The architecture of the Milky Way galaxy is that of a disk, a bulge, and a halo, with the entire assemblage bound by enigmatic dark matter. Every galaxy contains a supermassive black hole, and entire population of galaxies is sculpted by gravity into subtle structures on large scales.

What's included

15 videos3 readings3 quizzes

The expanding universe points back to an extraordinary state of extremely high density and temperature called the big bang.

What's included

13 videos3 readings1 quiz1 peer review

The Earth gives us a ringside seat on the physical, chemical, geological, and biological evolution of a dynamic terrestrial planet. The abundance of terrestrial planets in remote solar systems motivates the search for life and technology elsewhere in the universe.

What's included

15 videos3 readings3 quizzes


Instructor ratings
4.9 (1,219 ratings)
Chris Impey

Top Instructor

University of Arizona
3 Courses262,092 learners

Offered by

Recommended if you're interested in Physics and Astronomy

Why people choose Coursera for their career

Felipe M.
Learner since 2018
"To be able to take courses at my own pace and rhythm has been an amazing experience. I can learn whenever it fits my schedule and mood."
Jennifer J.
Learner since 2020
"I directly applied the concepts and skills I learned from my courses to an exciting new project at work."
Larry W.
Learner since 2021
"When I need courses on topics that my university doesn't offer, Coursera is one of the best places to go."
Chaitanya A.
"Learning isn't just about being better at your job: it's so much more than that. Coursera allows me to learn without limits."

Learner reviews

Showing 3 of 3636


3,636 reviews

  • 5 stars


  • 4 stars


  • 3 stars


  • 2 stars


  • 1 star



Reviewed on Aug 26, 2020


Reviewed on Sep 19, 2017


Reviewed on Dec 14, 2020


Open new doors with Coursera Plus

Unlimited access to 7,000+ world-class courses, hands-on projects, and job-ready certificate programs - all included in your subscription

Advance your career with an online degree

Earn a degree from world-class universities - 100% online

Join over 3,400 global companies that choose Coursera for Business

Upskill your employees to excel in the digital economy

Frequently asked questions