Technique · Spectroscopy & Classification

Polarimetry

Measuring the polarisation of light, which carries information no brightness or spectrum can — magnetic-field geometry, scattering by dust and grains, and the physics of everything from stellar surfaces to the cosmic microwave background.

Spectroscopy & ClassificationMeasures: The polarisation of light

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Sources

The primary and reference sources this topic draws on.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.