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Philosophy of science

Falsifiability

The criterion, associated with the philosopher Karl Popper, that a scientific claim must be testable and capable in principle of being proven wrong. It is one influential attempt to mark the boundary between science and non-science.

Highlights

  • A claim that cannot be tested is not science

Across the history of discovery

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • NASANational Aeronautics and Space Administration

    Mission data, planetary science, space telescopes, and public-domain imagery.

    Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.