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Daily curiosity, estimation thinking, and question deep-dives from the world behind Magnitudle.
Looking for today's puzzle? Play the daily Magnitudle game.
See some of the creators who have played Size It Up, Magnitudle’s daily visual size-estimation game, including NorthernLion, Ludwig, ohnePixel and Joe Bartolozzi.
Read articleHow Frank Drake turned the search for alien civilisations into one of science's most famous structured estimation problems.
ReadWhy the age and scale of the galaxy make alien silence one of science's most unsettling estimation problems.
ReadHow scientists use radioactive decay, ancient zircons, meteorites, and Moon rocks to estimate Earth's age.
ReadHere are six that became genuinely famous, and what made each one stick.
ReadWhy most questions only need a good estimate, and how to know when precision suddenly matters.
ReadHow scientists plan a mission to the Moon, from launch windows and translunar injection to gravity assists and reentry.
ReadHow scientists measure black holes by observing their shadows with the Event Horizon Telescope.
ReadHow astronomers estimate the number of stars in the Milky Way by weighing the galaxy and sampling the sky.
ReadHow scientists use Earth's orbit, Kepler's laws, and gravity to calculate the mass of the Sun.
ReadA simple thought experiment that reveals how explosive exponential growth really is — and why our intuition fails so completely to anticipate it.
ReadMost people's sense of geographic distance is badly miscalibrated. Here's a quick test — and why it matters more than you'd think.
ReadChess starts with just 20 possible moves. Three turns later, there are over 119 million possible game states. Here's how to estimate it — and why the number matters.
ReadThe creator of Wordle has a new daily puzzle game. Here's what Parseword is about, and what it says about where the daily game format is heading.
ReadHoneybee wings move at around 230 beats per second. Across trillions of bees, that adds up to something astonishing. Here's the estimation.
ReadThe Oscars have been running for nearly a century. Here's how to estimate the total nomination count — and what the aggregate reveals about the institution.
ReadLooking for games like Wordle? Here are the best daily puzzle games in 2026, with real opinions on what makes each one worth playing.
ReadFermi problems teach you to estimate what you can't look up. Here's where the technique came from and how to actually use it.
ReadYou could look it up. Or you could work it out — and get surprisingly close. Here's how.
ReadNot every daily puzzle becomes a habit. Here's what separates the games that stick from the ones you forget about after a week.
ReadA billion sounds like a big number. Here's why your intuition about it is probably completely wrong — and what that means for how you see the world.
ReadThere are more chickens alive right now than all wild bird species combined. Here's how to estimate the total — and why the number is so much larger than people expect.
ReadNumber-based daily puzzle games are a different challenge from word games. Here's what's out there and how each one tests a different kind of thinking.
ReadLearn how Magnitudle scores your estimates, why order-of-magnitude scoring makes sense for big numbers, and how to actually improve your score.
ReadEstimation games let you reason your way to an answer rather than just recall one. Here's what makes them uniquely satisfying — and why they work as a daily format.
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