The night sky, explained by playing with it. For every curious mind — no exams at this door.
Astronomy curates 8 of the navigation laboratories and tells them for the joy of it — 12 constellations drawn in colour, 57 named stars, the Sun, the Moon and the planets, above whichever town you type in.
If you are fourteen and you want to know why the sky turns, this is for you. Nothing here asks you to sit an examination.
Mean sun, apparent sun, stars. Watch them separate.
The laboratories these come from are open to everyone on the free month.
Start freeReal identifiers, as they appear inside the platform.
| Lab | Title |
|---|---|
| ES-01 | Rotating Earth and coordinate systems |
| ES-06 | Celestial sphere and coordinate frames |
| ES-02 | Solar, apparent and mean solar day |
| ES-03 | Sidereal day and sidereal time |
| ES-04 | Lunar day, retardation, tides — the Earth–Moon–Sun machine |
| ES-05 | The wandering stars — planets and the almanac |
| ES-07 | The fifty-seven — navigational stars, SHA, and Polaris |
| OP-16 | Tides — the Moon's pull & the keel |
A cadet or a serving officer starts free and is inside a laboratory in a minute. A college talks to us first, because enrolment and faculty tools need setting up properly.