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Black Holes and Interstellar, a free science course on Tomo

Black Holes and Interstellar

Unpack the real physics behind Christopher Nolan's cinematic masterpiece. Discover how Gargantua bends light, warps time on Miller's planet, and mirrors the actual black holes photographed by modern telescopes.

Like Duolingo, but for Black Holes and Interstellar. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

22 levels across 3 sections, about 44 minutes end to end, roughly 9 days at five minutes a day. It moves through Seeing the Impossible: What You Saw on Screen; The Plunge: Space, Portals, and Horizons; and The Deep Physics: Spin, Singularities, and Reality. It starts from scratch.

22 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Cooper the Cosmic Cat, the guide who teaches the Black Holes and Interstellar course
Black Holes and Interstellar
with Cooper the Cosmic Cat
22
Levels
3
Sections
5
Min/day
What you'll learn

Key ideas in Black Holes and Interstellar

  • A black hole emits no light of its own and is completely dark
  • The bright glow comes from gas and dust swirling inward and heating up from friction at extreme speeds
  • The glowing disk orbits in a flat sheet, similar to Saturn's rings
  • The black hole's intense gravity curves light paths, bending light from the back of the disk so it arcs over and under the sphere
  • The visible black circle is an optical shadow, not the physical edge itself
  • The dark shadow appears roughly two and a half times larger than the actual event horizon because gravity traps nearby grazing light rays
  • Gas orbiting toward an observer at near-light speed gets dramatically boosted in brightness and shifts toward blue
  • Gas moving away dims significantly and shifts toward red
  • Movies often balance the two sides symmetrically so viewers can clearly see the full shape
  • A black hole acts like a giant, warped magnifying glass on space behind it
  • Distant stars and galaxies get stretched into rings, arcs, and double images around the silhouette
  • This visual distortion of background light is called gravitational lensing
  • Mass bends the space around it rather than reaching out with an invisible cord
  • A black hole concentrates so much mass that it curves the surrounding space into a steep bowl
  • Objects fall toward a black hole simply by following the curved contours of space
  • Clocks closer to an intense gravitational mass tick slower relative to clocks far away
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 Black Holes and Interstellar 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.

Unmasking the Golden Glow

Where does the brilliant golden light around a black hole actually come from?

Get it right to open this lesson and 21 more in the app.

Course map

Where Black Holes and Interstellar takes you

  1. 1

    Seeing the Impossible: What You Saw on Screen

    • Decoding Gargantua's Golden Glow
    • Miller's Planet: The Price of Ticking Clocks
  2. 2

    The Plunge: Space, Portals, and Horizons

    • Wormholes: The 3D Sphere in Space
    • Crossing the Event Horizon
  3. 3

    The Deep Physics: Spin, Singularities, and Reality

    • Kerr Black Holes: The Power of Extreme Spin
    • Singularities and the Broken Laws of Physics
    • Hollywood Code to Real Telescopes

3 sections · 7 units · 22 levels. Built to play, not to enroll.

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How it's taught

You pick the voice

This course
The Pirate

Black Holes and Interstellar is taught in the The Pirate style: arr, learning be an adventure!. 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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