8legs: Square kilometre array

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How the electromagnetic spectrum opened our eyes to the universe

The article explains how the electromagnetic spectrum reveals different cosmic details, from gamma rays to radio waves.
Radio waves are highlighted as both a medium for Earthly communication and a messenger from space.
Infrared observations with the JWST help capture galaxies as they appeared billions of years after the big bang.
The Square Kilometre Array (SKA) is introduced as a future giant radio observatory to probe the early universe.
The article notes that combining observations across wavelengths helps test ideas about galaxy growth and cosmology.
The piece emphasizes that humans are 'born fluent in only a single language of light' but the universe is multilingual.
Historical milestones trace how Newton, Herschel, and later technology expanded the visible spectrum.
The article highlights the universal reach of the spectrum for studying planets, stars, and cosmic history.
The author cites Europa’s plumes and UV traces as examples of how different wavelengths reveal planetary processes.
The piece links SETI and multi-wavelength astronomy as a collaborative approach to find life beyond Earth.
The article closes by portraying the spectrum as a Rosetta Stone for translating unseen cosmic messages.

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