Clusters and the Cosmic Web
Students climb the hierarchy of cosmic structure from the Local Group to the Virgo Cluster and its central giant M87, then out to the cosmic web of filaments, walls and voids and how gravity built it.
Grades 5-8About 15 minutes of narrated flight, plus discussion stops6 stops
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What students will see and do
Students fly from the Local Group to the Virgo Cluster, into its heart at M87, and then pull back to see the cosmic web while Aetherion explains how clusters change galaxies and how gravity wove the web. The lesson pauses for discussion at the Local Group and at M87.
Learning objectives
- Order the levels of cosmic structure from planet to cosmic web and describe each level.
- Explain how hot cluster gas strips spiral galaxies and why clusters contain more ellipticals.
- Describe filaments, walls, clusters and voids as parts of the cosmic web, with one example each.
- Explain how tiny density differences in the early universe grew into the cosmic web through gravity.
NGSS connections
| MS-ESS1-3 | Students analyze the scale of structures from groups (10 million light-years) to superclusters (500 million light-years) and voids. |
|---|---|
| MS-ESS1-2 | Students model gravity's role in assembling clusters, heating cluster gas and growing the cosmic web from small ripples. |
Stops on this journey
- Your Address in Space (discussion stop)
- The Virgo Cluster
- Life in a Crowded City
- The Giant at the Center (discussion stop)
- Threads, Walls and Voids
- How the Web Was Woven
Vocabulary
- galaxy group
- galaxy cluster
- supercluster
- filament
- void
- cosmic web
- intracluster gas
- galactic cannibalism