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Imaging, which yields photographs (images) of astronomical objects; spectroscopy, in which astronomers obtain and study spectra; and timing, which tracks how an object changes with time.

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15y ago
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6mo ago

The three basic categories of astronomical observation are optical, radio, and space-based. Optical observations involve using telescopes to detect visible light; radio observations involve detecting radio waves from celestial objects; space-based observations are done using telescopes and satellites positioned outside Earth's atmosphere to observe different wavelengths of light.

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Q: What are 3 basic categories of astronomical observation?
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