space
Can Cepheid Variables Be Used to Map Dark Energy?
💡 The Answer
- Cepheids anchor the cosmic distance ladder needed to measure dark energy's effect.
- Precise distances to Type Ia supernovae, calibrated with Cepheids, revealed cosmic acceleration.
- The SH0ES project uses Cepheids to reduce uncertainties in the Hubble constant.
- Discrepancies in H₀ might indicate new properties of dark energy.
🔗 You Might Also Like
📅 On This Day — October 313 events →
1923 — The first of 160 consecutive days of 100° Fahrenheit at Marble Bar, Western Aust
1924 — World Savings Day is announced in Milan, Italy by the Members of the Association