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GAIA

Live sky

Move your phone or tablet across the sky: GAIA shows the stars, constellations, planets, the Moon and the International Space Station in the direction you point.

Calibrate the compass

If the stars look shifted, move the phone in a figure 8 and step away from metal objects.

Red light

Turn on red light to keep your night vision: your eyes need about 20 minutes to adapt to the dark.

Look for the ISS

It looks like a bright dot crossing the sky in a few minutes, shortly after sunset or before dawn.

Positions are computed in your browser (bright-star catalogue, astronomy-engine for the Sun, Moon and planets). Accuracy depends mostly on the device compass, which can be off by a few degrees.