Uploaded June 2025 | Updated September 2026, 9 hours ago
New data from @desisurvey5544 and @actpol6300 show different results. DESI’s map of 15 million galaxies suggests dark energy driving cosmic expansion could be fading over time (2.8–4.2σ signal) @BerkeleyLab . ACT’s CMB measurements still fit the ΛCDM model with constant dark energy.
Who's right?
New data from @desisurvey5544 and @actpol6300 show different results. DESI’s map of 15 million galaxies suggests dark energy driving cosmic expansion could be fading over time (2.8–4.2σ signal) @BerkeleyLab . ACT’s CMB measurements still fit the ΛCDM model with constant dark energy.
Who's right?
