Earth’s Cosmic Engine
Like Duolingo, but for Earth’s Cosmic Engine. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

Key ideas in Earth’s Cosmic Engine
- High, wispy clouds are the leading edge of a distant weather system
- Tall, puffy shapes indicate the energy needed for a sudden storm
- Rapid upward growth means warm air is rising quickly and is unstable
- Clouds get lower and thicker as a storm front moves closer
- Cloud shapes and storm prediction
- Cloud changes during storm approach
- Flat clouds form when air is stable and moves sideways
- The sequence of cloud changes that signal an approaching warm front
- Vertical height is a direct map of how fast air is moving up
- How vertical cloud growth indicates atmospheric instability and storm potential
- Matching cloud shapes to the air movement they represent
- Warm water evaporates more easily, putting more moisture into the air.
- Water absorbs and holds onto heat better than soil or rock.
- Moist air rising and cooling over land creates clouds and rain.
- The ocean releases stored heat slowly when the air turns cold.
- Ocean proximity prevents the rapid temperature swings seen in deserts.
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Earth’s Cosmic Engine 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.
Here's what playing it feels like
A real question from this course. Take your best guess.
You spot thin, wispy clouds high in the blue sky. What do these 'scouts' usually represent?
Get it right to open this lesson and 25 more in the app.
Where Earth’s Cosmic Engine takes you
Discover how our planet functions as a single, interconnected machine. From the deep ocean currents to the solar winds that shape our atmosphere, learn to read the signs of Earth's complex systems.
- 1
Reading the Planet's Pulse
- Predicting Storms by Cloud Shapes
- How Ocean Temperatures Drive Local Weather
- Identifying Rock Layers as Time Capsules
- Using Stars to Map Your Position
- 2
The Hidden Gears of Change
- The Deep Sea Conveyor Belt
- How Tectonic Plates Recycle the Crust
- The Greenhouse Effect: Earth's Thermal Blanket
- Jet Streams: The High-Altitude Rivers of Air
- Solar Cycles and Their Impact on Satellites
- The Chemistry of Ocean Acidification
- 3
Origins and Cosmic Connections
- How the Moon Stabilizes Earth's Wobble
- The Magnetic Shield Protecting Our Atmosphere
- Tracing Water from Asteroids to Our Oceans
3 sections · 13 units · 26 levels. Built to play, not to enroll.
You pick the voice
Earth’s Cosmic Engine is taught in the The Bestie style: your friend who just gets it. 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.
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Start Earth’s Cosmic Engine today.
Download Tomo, search Earth’s Cosmic Engine, and play your first lesson in under a minute.