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Read the Light of the UniverseModule 5Read Images, Spectra, and Light Curves
Module 5 / Lesson 20 of 2430 min
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When Is a Signal Strong Enough to Believe?

How do background, random noise, systematic error, significance, and repeated observation change a claim?

Separate random scatter from systematic bias and carry uncertainty into the final interpretation.

A faint galaxy repeats at the same position across several observations while random speckles and one artifact change.
Vastward artistic reconstruction. Repetition is shown as evidence context, not as a numerical discovery claim.

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