Nature of Astronomy

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Observation

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Information you gather with your senses or tools (like a telescope). (Cognate: Spanish observación)

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Evidence

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Data or facts that support or reject a claim. (Cognate: Spanish evidencia)

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Hypothesis

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A testable explanation or prediction. A scientific "guess."

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Falsifiable

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The ability for a claim to be proven false. This is a necessary trait for a scientific claim.

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Pseudoscience

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"Fake science." A belief or practice that is presented as scientific but does not follow the scientific process.