A journey to understand the cosmos

The sky stops feeling like a mystery.

Astraea turns constellations, stars, planets, and their stories into a clear journey you can explore at your own pace.

Download free on theApp Store Download free onGoogle Play

Made for complete beginners Available in English and Spanish

Guided lessons Interactive exploration Quizzes with immediate feedback Widgets and daily content

Don't memorize scattered facts. Build your own map of the universe.

Each region connects one idea to the next. You observe, interact, answer, and progress with context.

Explore

Begin with a clear route

Move through regions dedicated to constellations, stars, planets, and galaxies in an order that gives every discovery meaning.

Understand

Turn information into an experience

Observe relationships, touch elements, and understand what you're seeing before moving to the next idea.

Check

Discover what you can already explain

Quizzes make every correct answer, mistake, and review a visible part of your progress.

There is always something new to discover.

Astraea does more than point out stars. It connects what you see with the science that explains it and the stories that gave it meaning.

Constellations

Their shapes, main stars, and deep-sky objects.

Stars

How they are born, shine, change, and reach the end of their lives.

Planets

The worlds in our system and what we know about other systems.

Galaxies and deep sky

Nebulae, clusters, galaxies, and the universe's enormous scales.

History and mythology

The cultures that watched the sky and the stories they built around it.

Science tells you what happens. Stories help you remember it.

Astraea brings astronomy, history, and mythology together without confusing them. You understand the real phenomenon and discover why that part of the sky mattered to different cultures.

Science and traditional stories are clearly distinguished throughout the experience.

Astraea science and history lesson in English

A small dose of the universe every day.

Keep your streak, solve the daily quiz, and bring your next discovery to your Home Screen with Astraea widgets.

Facts and questions that change every day
Meaningful progress, achievements, and streaks
Widgets that let you continue where you left off

The essentials before you begin.

Answers about the experience, its content, and where you can use Astraea.

Do I need any astronomy knowledge?

No. Astraea is designed to start from zero and move step by step through different regions of the cosmos.

What can I learn with Astraea?

You can learn about constellations, stars, planets, galaxies, deep-sky objects, and the mythology and history connected to the night sky.

Is Astraea free?

You can download Astraea for free and start learning. The app also offers an optional Premium experience for those who want to go further.

Is Astraea available in English and Spanish?

Yes. The interface, lessons, quizzes, daily content, and widgets are available in both languages.

Which devices support Astraea?

Astraea is available for iPhone and Android through the App Store and Google Play.

The next time you look at the sky, you'll know a little more.

Download Astraea free and turn your curiosity into a journey through the universe.

Download free on theApp Store Download free onGoogle Play

No previous knowledge needed.