Why Astronomy Hasn't Really Changed Since the 1900s

The video explores how astronomers study the universe using light. It covers three main methods: direct imaging, polarization, and color analysis. Direct imaging involves capturing images of celestial objects, while polarization techniques help study phenomena like magnetic fields. Color analysis, including blackbody radiation and spectroscopy, reveals information about temperature and composition. The video highlights the historical reliance on light and the excitement around new methods like gravitational waves.

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