#1
#1 out of 1
1d ago
99.9999999% Certainty: Astronomers Confirm a Discovery with Far-Reaching Consequences for the Universe's Fate
- New study links host-galaxy age to Type Ia supernova brightness, challenging standard candles.
- Correcting the age bias could remove evidence for an accelerating cosmic expansion.
- Findings align with a dynamic dark energy model rather than a constant one.
- DES observations also show tension with the ΛCDM model, supporting the reassessment.
- Future surveys like LSST and Euclid could test whether dark energy evolves over time.
- The study analyzes more than 300 SN Ia host galaxies to identify the trend.
- Younger galaxies tend to host dimmer supernovae after standardization, biasing distances.
- The work could explain part of the Hubble tension between CMB and distance-ladder methods.
- Isolating supernovae in galaxies of uniform age is essential for robust cosmology tests.
Vote 0