Visible light is only one window
Stars, gas and dust also emit radio, infrared, ultraviolet, X-ray and gamma-ray radiation.
Earth's atmosphere blocks some wavelengths
Space telescopes can observe bands that do not reach the ground well.
Detector technology differs
Radio antennas and X-ray detectors work very differently from ordinary cameras.
Combining wavelengths builds a fuller picture
The same object can reveal temperature, composition and energetic events in different bands.
Source trail: NASA: electromagnetic spectrum · NASA: star basics
This page explains scientific concepts for general learning. It does not replace laboratory safety procedures, professional engineering guidance, or individualized medical advice.