Learn Astronomy Free


We have 24 free resources for learning Astronomy including educational Online Classes, Websites, YouTube & Online Videos, Kindle & Other eBooks, and Games, from providers such as Khan Academy, SciShow Space, The Smithsonian Institution, and Big History Project. Find 13 more resources in subtopics including Astrobiology, Solar System, Space Stations, Black Holes, and Origins of the Universe.


Free

100,000 Stars

Pre-K - College | Website

100,000 Stars is an interactive visualization of the stellar neighborhood created for the Google Chrome web browser. It shows the location of 119,617 nearby stars derived from multiple sources,...

Free

Air and Space Anywhere


1st - High School | Website

Visit Air and Space from wherever you are! Explore our collection, online activities, virtual tours, and educational resources.

Free

Astronomy


High School - College | Website, Book, Kindle/ebook, Worksheet/Printable

Astronomy is designed to meet the scope and sequence requirements of one- or two-semester introductory astronomy courses. The book begins with relevant scientific fundamentals and progresses...

Free

Astronomy


6th - College | Website

From our solar system neighbors to the edge of the galaxy....space and its endless possibilities have always captured the interests of children of all ages. From hunting water on Mars to living in...

Free

Astronomy Crash Course


9th - College | Online class, Online video/YouTube

Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: “What is astronomy?”

Free
Paid add-ons

Astronomy: Exploring Time and Space


7th - College | Online class

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...

Free
Paid add-ons

Confronting The Big Questions: Highlights of Modern Astronomy


9th - College | Online class

An introduction to modern astronomy’s most important questions. The four sections of the course are Planets and Life in The Universe; The Life of Stars; Galaxies and Their Environments; The History...

Free

Cosmology and astronomy


7th - College | Online class

The Earth is huge, but it is tiny compared to the Sun (which is super huge). But the Sun is tiny compared to the solar system which is tiny compared to the distance to the next star. Oh, did we...

Free

Exoplanets


4th - 9th | Online video/YouTube

Learn about planets outside our solar system - what they might be like, how their seasons work, which might support life, and what kind of weather they have.

Free
Paid add-ons

From the Big Bang to Dark Energy


High School - College | Online class

We have learned a lot recently about how the Universe evolved in 13.7 billion years since the Big Bang. More than 80% of matter in the Universe is mysterious Dark Matter, which made stars and...

Free
Paid add-ons

Imagining Other Earths


9th - College | Online class

Are we alone? This course introduces core concepts in astronomy, biology, and planetary science that enable the student to speculate scientifically about this profound question and invent their own...

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Free

Let's Go To Space!


Kindergarten - 3rd | Online video/YouTube

Explore our solar system with Jessi and Squeaks!

Free

Looking at the Moon


Kindergarten - 4th | Website

Having conversations with young children contributes to their thinking and language development. All conversations are good, but research shows that the quality of words children hear matters more...

Free

NASA Kids' Club


Pre-K - 4th | Online resource

NASA provides a safe place for children to play as they learn about NASA and its missions. On this site, you will find games of various skill levels for children pre-K through grade 4. These games...

Free

Observing with NASA


3rd - High School | Website

NASA's space science researchers control some of the world's most sophisticated space probes and orbiting telescopes to get amazing images of objects in space. Now YOU can join them by operating...

Free

Origins - Formation of the Universe, Solar System, Earth and Life


College | Online class

The Origins course tracks the origin of all things – from the Big Bang to the origin of the Solar System and the Earth. The course follows the evolution of life on our planet through deep...

Free

Our Solar System and Earth


4th - College | Online class

Ever since the Big Bang, the Universe has been drifting and expanding. The birth and death of stars leave an aftermath of galaxies, planets, and even living organisms. Watch the Earth transform...

Free

Reach for the Stars


4th - 8th | iPhone/iPad

Reach for the Stars presents early learners with a new approach to astronomy, one that educates and inspires in ways no conventional materials can hope to match. Produced by a collaboration between...

Free

Scale of the universe


7th - College | Online class

The Earth is huge, but it is tiny compared to the Sun (which is super huge). But the Sun is tiny compared to the solar system which is tiny compared to the distance to the next star. Oh, did we...

Free

Stars


3rd - 8th | Online video/YouTube

Learn all about stars in this series of 26 videos that covers topics from neutron stars to solar "tornadoes" to zombie stars.

Free

Stars, black holes and galaxies


High School - College | Online class

Stars begin when material drifting in space condenses due to gravity to be dense enough for fusion to occur. Depending on the volume and make-up of this material, the star could then develop into...

Free

The Universe


4th - College | Online class

Where did everything come from? Where are we heading? Big History tells the story of the Universe starting from the Big Bang, the formation of stars, planets, life on Earth, modern civilization —...

1
Free

The Universe and Space Stuff


4th - College | Online/YouTube video

Series of beautifully-animated videos explaining fundamental astronomy topics, including: Black holes  Red Dwarfs What is Light? Dark matter and dark energy Neutron stars The solar system

Free

WorldWide Telescope


7th - College | Product, Windows

The WorldWide Telescope is a rich visualization environment that functions as a virtual telescope, bringing together imagery from the best ground- and space-based telescopes to enable seamless,...

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Frequently Asked Questions

What's the best way to learn Astronomy?

The best learning resource is the one that you will stick with. For some students, that means a resource that's fun and engaging like a mobile or PC game. For others it's a resource that lets them learn on their own time, like a mobile app or YouTube channel. For other students, it's a resource that emphasizes reinforcement, such as a workbook or set of printable worksheets. The best way to figure out what is right for you is to look at a wide range of resources, keeping your selection criteria in mind. Search our database of 24 resources for learning Astronomy.

What should I consider when choosing a learning resource for Astronomy?

Think about what is going to help you continue with the resource and actually complete it. Primary considerations should be:

  • Time commitment - how much time can you spend with this resource per day/week?
  • Portability - will you be studying at home or in other places, such as on the bus or after school?
  • Reinforcement learning - does the resource offer reinforcement? Think about whether you'll want exercises or printable worksheets to help you practice what you learned.
  • Price - does the resource require a monthly subscription? This may be fine for topics you can learn in a month or two, but it may be prohibitively expensive otherwise.
Search our database of 24 resources for learning Astronomy.

I have specific needs for learning Astronomy. Where can I find learning materials to meet my needs?

Our advanced search page offers powerful filtering tools so you can find the right learning materials for you.