(Physics only) Explain that scientific theories about the universe are supported, changed or replaced when new evidence is available.

(Physics only) Explain that scientific theories about the universe are supported, changed or replaced when new evidence is available.. Within Red-shift, this learning objective sits inside Galaxies, universe expansion and cosmology for AQA Physics 8463. Focus on using ideas such as physics only, universe, evidence accurately in your explanation. A strong response should define the core idea, describe the relevant physical process, and connect it back to the question wording instead of giving a vague definition. When revising, students should aim to explain the subject clearly, include precise physics vocabulary, and show how the idea links to the wider topic rather than listing isolated facts.