Material Detail

An interactive puzzle game for learning astronomical spectroscopy. Students explore how each chemical element produces a unique pattern of spectral lines, examine reference spectra for any element, and practice identifying elements from an unknown source spectrum — while accounting for Doppler shift to determine the source's radial velocity. In puzzle mode, a synthetic spectrum is generated from a hidden combination of elements at an unknown velocity; students must identify both the composition and the speed of the mystery source.

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