space-44-exam-07. Explain (Physics only) Explain that the observed expansion of the universe supports the Big Bang theory for galaxy distance and recession speed. Use scale focus words: distance size universe galaxy solar stellar planetary cosmological hierarchy scale.

space-44-exam-07: A strong answer says that (Physics only) Explain that the observed expansion of the universe supports the Big Bang theory in Red-shift and evidence for an expanding universe. For galaxy distance and recession speed, name the relevant object, stage, motion or evidence and connect it to the learning objective. Red shift means light from distant galaxies has increased wavelength; together with cosmic microwave background radiation it supports an expanding universe from the Big Bang. Finish by separating the idea from a misconception such as planet versus star, moon versus satellite, orbit versus rotation, or galaxy versus universe.

This exam response follows a precise chain: identify the Space Physics context, explain the mechanism or evidence, and protect the concept boundary. The scale focus makes this item distinct while anchored to Red-shift and evidence for an expanding universe.