ScienceThe ProfessorBeginner
The Universe Above Us, a free science course on Tomo

The Universe Above Us

Journey from your own backyard to the edge of the observable universe. Discover how stars are born, why time slows down near black holes, and how we are searching for life among the billions of galaxies.

Like Duolingo, but for The Universe Above Us. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

90 levels across 8 sections, about 180 minutes end to end, roughly 36 days at five minutes a day. It moves through Finding Your Way, Our Solar Neighborhood, The Life of Stars, Islands in the Dark, How We Explore, The Invisible Universe, Cosmic Events, and The Next Giant Leap. It starts from scratch.

90 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Cosmo the Comet, the guide who teaches the Universe Above Us course
The Universe Above Us
with Cosmo the Comet
90
Levels
8
Sections
5
Min/day
What you'll learn

Key ideas in The Universe Above Us

  • Artificial city lights wash out the faint glow of distant stars
  • The chemical process in the eye for night vision takes about 20 minutes
  • Only the handful of brightest stars and planets can cut through urban light pollution
  • Looking at a phone screen or bright light instantly resets your night vision
  • A truly dark sky reveals thousands of stars and the band of the Milky Way
  • Initial 'darkness' is deceptive; more detail emerges as time passes
  • The impact of urban light pollution on star visibility
  • The time required for biological dark adaptation
  • Stars are distant points of light easily distorted by Earth's turbulent atmosphere
  • Planets are closer and appear as tiny disks, which makes their light more stable and 'steady'
  • The North Star (Polaris) sits almost directly above Earth's northern axis
  • Twinkling is an effect of the air, not the celestial object itself
  • The North Star's fixed position makes it a constant reference for direction
  • The hand held at arm's length provides a consistent scale for measuring the sky
  • Distinguishing planets from stars by their light quality
  • Angular distance is measured in degrees to describe how far apart objects appear from our perspective
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives The Universe Above Us the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

The Glow and the Gaze

How long should you wait in the dark for your eyes to fully adjust to the night sky?

Get it right to open this lesson and 89 more in the app.

Course map

Where The Universe Above Us takes you

  1. 1

    Finding Your Way

    • Your First Night Out
    • Tracking the Moon
    • Spotting the Planets
  2. 2

    Our Solar Neighborhood

    • The Sun: Our Local Powerhouse
    • The Inner Rocky Worlds
    • The Outer Gas Giants
    • Moons, Rings, and Small Stuff
  3. 3

    The Life of Stars

    • How Stars are Born
    • Stellar Endings
    • Black Holes
  4. 4

    Islands in the Dark

    • The Milky Way
    • The Variety of Galaxies
  5. 5

    How We Explore

    • Telescopes: Eyes on the Sky
    • Rockets and Robots
    • Living in Orbit
  6. 6

    The Invisible Universe

    • The Big Bang
    • Dark Matter and Dark Energy
    • The Search for Other Earths
  7. 7

    Cosmic Events

    • Eclipses and Alignments
    • Meteors and Space Weather
  8. 8

    The Next Giant Leap

    • Returning to the Moon
    • The Path to Mars
    • Interstellar Dreams

8 sections · 23 units · 90 levels. Built to play, not to enroll.

New

Tomo is in ChatGPT

Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.

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How it's taught

You pick the voice

This course
The Professor

The Universe Above Us is taught in the Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

Keep going

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Start free

Start The Universe Above Us today.

Download Tomo, search The Universe Above Us, and play your first lesson in under a minute.