Standard candles

The brightness of RS Puppis, one of the brightest Cepheid variable stars, changes at a constant rate on a six-week cycle. Credit: NASA, ESA, Hubble Heritage Team (STScI/AURA)-Hubble/Europe Collaboration

Pulsating Beacons: Revolutionary Measurements Redefine Cepheid Variable Stars

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**Title:** Pulsating Beacons: Revolutionary Measurements Redefine Cupid Stars **Subtitle:** New study reveals deep insights into the structure and evolution of cupid stars through precise radial measurements, offering new approaches to the study of the universe
Conceptual diagram of this study. Signals from supernovae (close-up lower right), quasars (close-up middle left), and gamma-ray bursts (close-up top center) reach Earth in the Milky Way galaxy (background), where we can use them to measure cosmological parameters. Credit: NAOJ

Rewriting the past and future of the universe - new research sheds light on the fate of our cosmos

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New research has improved the accuracy of the parameters that control the expansion of the universe. More precise parameters will help astronomers determine how the universe grew to its current state, and how it will evolve in the future.
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