# Galaxies and the universe

Describe the scale of the universe, including the structure of galaxies, the position of the Sun in the Milky Way, and the use of light years as a unit of distance, and appreciate why space exploration requires enormous timescales

Builds on: Earth & Space Vocabulary (soft, https://ai.page/c/earth-and-space-vocabulary/en.md), Universal Gravitation (soft, https://ai.page/c/universal-gravitation/en.md), Star Brightness & Distance (hard, https://ai.page/c/star-brightness-and-distance/en.md)

Concept id: galaxies-and-the-universe. Subject: science. Licence: CC BY-SA 4.0.

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