Library › Scale of the universe: objects drawn at true relative size, zoomed with a slider or pinch from 300 m to the observable universe (log scale). Objects between 1/100 of the shown width and the full width are drawn side by side; tapping one opens its Library page.
Library.scaleObjects: ISS; Sun, planets, dwarf planets and moons from each page's drawing radius; stars whose page gives "Radius: N × Sun" (Sirius, Arcturus, Rigel); deep-sky objects from the page's distance × apparent size (M57, M1, M45, M42, M13, M33, M87, M31).- Without pages, drawn faint: Moon's, Earth's and Neptune's orbits, heliosphere (2 × 121 AU), Milky Way (100,000 ly), Local Group (10 Mly), Laniakea (520 Mly, Tully et al. 2014), observable universe (93 billion ly).
- Betelgeuse and Antares are left out: their pages give no radius.
- Tests: every linked page exists; size formatting.