The Search for Extraterrestrial Life
Like Duolingo, but for The Search for Extraterrestrial Life. 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 The Search for Extraterrestrial Life
- Gases in an alien atmosphere absorb specific wavelengths of starlight
- Oxygen and methane react and disappear unless life constantly replenishes them
- The resulting absorption spectrum acts as a chemical fingerprint for life
- Chemical disequilibrium shows a planet's chemistry is being actively driven by biology
- Chlorophyll-like pigments reflect infrared light to avoid overheating
- Natural objects emit radio waves across a wide range of frequencies
- The Red Edge creates a distinct contrast between visible and infrared light
- Intentional alien broadcasts concentrate energy into a very narrow frequency
- Distinguishing artificial technosignatures from natural cosmic radio sources
- Carbon can form the complex, stable chains needed for alien genetic coding
- Identifying the specific light-reflection pattern of alien plant life
- Water remains liquid over a wide temperature range, acting as a universal solvent
- The chemical justification for prioritizing carbon-based life searches
- Gravitational tugging from a host planet creates internal friction
- A planetary dynamo creates a magnetosphere that deflects radiation
- Tidal heating generates enough warmth to melt subsurface ice
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 The Search for Extraterrestrial Life 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 a telescope watching a planet pass in front of its star. How do we know what's in that planet's atmosphere?
Get it right to open this lesson and 11 more in the app.
Where The Search for Extraterrestrial Life takes you
Move beyond science fiction to explore the rigorous science of astrobiology, from detecting chemical fingerprints in distant atmospheres to the protocols of first contact.
- 1
Detecting the Invisible
- Hunting for Biosignatures
- Habitability Beyond the Goldilocks Zone
- 2
The Great Silence and Contact
- Navigating the Fermi Paradox
- Protocols for First Contact
2 sections · 4 units · 12 levels. Built to play, not to enroll.
You pick the voice
The Search for Extraterrestrial Life 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 The Search for Extraterrestrial Life today.
Download Tomo, search The Search for Extraterrestrial Life, and play your first lesson in under a minute.