What makes constellations?

Constellations are named after a Greek or Roman God. They were made to help sailors find their way. Now they are used to help more people find their way. In this world such help is very useful.

Friday, June 20, 2025

Hot Gas Linking Clusters

"Astronomers have discovered a vast tendril of hot gas linking four galaxy clusters and stretching out for 23 million light-years, 230 times the length of our galaxy." https://www.space.com/astronomy/astronomers-turn-up-missing-matter-in-the-largest-structures-in-the-cosmos-the-models-were-right
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