project

Simons Observatory

Cosmic microwave background observatory designed for high-precision polarization measurements.

Current clusters

science2 publishers

Physicist argues a precise helium-4 count restores Big Bang nucleosynthesis as a cosmic probe

Primordial helium-4, measured with new precision in September 2026, makes Big Bang nucleosynthesis a competitive probe again, a physicist argues. Helium depends on how fast the young universe expanded, and so on how many hot, light particles it held.

Publishers:phys.orgtheconversation.com

Reality

Evidence40
Adoption: Insufficient
Hype gap: Insufficient
Incentives45
Confidence45

science1 publisher

UC San Diego's cross-check reproduces the standard calibration pattern across eight Planck maps

UC San Diego physicists cross-checked eight Planck polarization maps and found their relative calibration matches the standard analysis. The test cancels any rotation all detectors share, so the hinted 0.37-degree twist still needs an absolute angle reference.

Publishers:phys.org

Reality

Evidence55
Adoption: Insufficient
Hype gap+15
Incentives35
Confidence55