Earth in the Cosmic Flow
Like Duolingo, but for Earth in the Cosmic Flow. 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 forever · No credit card · iPhone & Android

Key ideas in Earth in the Cosmic Flow
- Lithospheric tides cause the solid crust to rise and fall like the ocean
- The Moon's mass acts as a gravitational anchor to stabilize axial tilt
- The Earth's rigid surface is elastic enough to stretch under lunar pull
- A shifting axis causes extreme, unpredictable changes in seasonal sunlight
- The Theia impact merged the iron cores of two protoplanets into Earth
- The Moon's gravitational effect on the solid Earth
- Tidal friction converts rotational energy into orbital energy
- Lighter rocky debris from the impact's outer layers formed the Moon
- The Moon's role in stabilizing Earth's climate
- The transfer of energy forces the Moon further away while slowing Earth
- The process of tidal friction and its effect on Earth's rotation
- Earth's surface recycling
- Tidal friction and Earth's rotation
- Moon's lack of surface overwriting
- Giant Impact and Earth's core
- Moon as a historical record
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 in the Cosmic Flow 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.
Imagine Earth as a spinning top that wants to wobble wildly. What celestial object acts as a gravitational anchor to keep our axial tilt stable?
Get it right to open this lesson and 11 more in the app.
Where Earth in the Cosmic Flow takes you
Move beyond basic planetary facts to understand how Earth is actively shaped, shielded, and fueled by its relationship with the cosmos.
- 1
The Local Influence
- The Moon's Hidden Hand
- Solar Weather and the Shield
- 2
The Deep Time Connection
- Milankovitch: Earth's Orbital Pulse
- Stardust in the Soil
2 sections · 4 units · 12 levels. Built to play, not to enroll.
You pick the voice
Earth in the Cosmic Flow is taught in the The Storyteller style: every lesson is a story. 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 in the Cosmic Flow today.
Download Tomo, search Earth in the Cosmic Flow, and play your first lesson in under a minute.