The stars, the Moon and the planets over your school tonight. Drag the time bar to move through the night, and tap a star to find out how long its light took to get here.
Place
No place by that name in the list. Try the nearest big town.
Sky
Show
Constellations
Labels
Milky Way
Planets
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Teacher tips
The dome shows the whole sky as if you lie on your back with your head to the north. North is at the top, so east is on the left. Drag the dome round until the way the class is facing is at the bottom.
Press V, or double-click a spot on the dome, to stand up and look that way. Drag to look around. Scroll or pinch to zoom.
Press Play at 10 min/s to watch the stars wheel round the south pole of the sky. From Sydney and places further south, the Southern Cross goes round the pole and never sets.
Tap a star to see how far away it is and what year the light you're seeing left it.
Show the class City, then Outback, under Sky. Street lights hide most of the stars and all of the Milky Way.
The Moon is drawn about five times bigger than it looks, so its shape shows up on the board. The phase is the real one.
The web address keeps the place, the time and the view. Bookmark it to come back to the same sky in a lesson.
Keys: Space play or pause, ←→ 10 minutes (with Shift an hour), [] a day, N now, V view, L labels, C constellations, M Milky Way, T tonight's list, F full screen, Esc this menu.