Light & Spectrum

Telescopes use light to decode the Universe — even light we cannot see.

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The Electromagnetic Spectrum

Light comes in many forms: radio, microwave, infrared, visible, ultraviolet, X-ray, and gamma-ray.

Why It Matters

• Infrared reveals hidden star nurseries.
• Ultraviolet shows hot young stars.
• X-ray exposes black holes and neutron stars.