Story perspectives
V1 Star: A Century of Cosmic Discovery and Expansion
11/13/2025
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Story summary
- A century ago, the discovery of star V1 in the Andromeda galaxy transformed our understanding of the universe.
- Edwin Hubble used this Cepheid to measure Andromeda's distance and establish it as a separate galaxy.
- This defined the cosmic distance ladder, enabling Cepheids to gauge distances.
- The Hubble Space Telescope broadened this work, revealing the universe's accelerating expansion.
- Today, studies aim to refine expansion measurements, with V1 calibrating the universe's scale.
