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Khi nao dung Star Trails 3D Explorer

Use the Star Trails 3D Explorer when you need diurnal-motion and circumpolar-circle literacy - and skip it when you only need static asterisms or a day-length comparison.

  • Classroom demos of why some stars never set
  • Comparing circumpolar circles at different latitudes
  • Introducing the sidereal day before deeper day-length comparisons

This page does not match tonight sky and is not a star catalog.

Walk the controls in the step-by-step guide, or compare options in vs alternatives. Open the Star Trails 3D Explorer.

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