The solar system and beyond: the Sun, how the planets were born, each planet in turn, the Moon with its phases, eclipses and tides, asteroids, the moons of Jupiter, the rings of Saturn, comets, stars, galaxies and the people who went to space.
Tests: 146 of 357 right (40.9%) · plain 56 of 132 · ★ 46 of 99 · ★★ 25 of 67 · ★★★ 19 of 59 · exam 52 of 128 · Controls: all red · Run: 2026-10-18, commit f3c23ea72
The controls, each to be below the real 146 of 357: no lesson 94 of 357 — red; questions shuffled 123 of 357 — red; key sentences removed 116 of 357 — red. The guessers: the longest option 108 of 357; the first option shown 94 of 357. The lessons sentence by sentence: the course in the corpora.