3D simulation

Solar Eclipse 3D Simulator

Eclipses · umbra · penumbra · alignment

Learning outcomePredict when a Moon–Earth–Sun alignment can produce a solar eclipse.

Interactive 3D model

Moon alignment offset0.15 °Moon distance384400 km

Moon angular size0.520°

Coverage proxy81%

AlignmentNear central

Learning focus

Change the alignment and lunar distance to see why total eclipses require a narrow geometric configuration.

apparent angular size ≈ diameter / distance