No turf wars—just structure. For each H₀ method (standard candles, BAO, time delays, etc.), list the variables it truly uses and the role each plays (what physical relation it taps). Put that next to the achieved uncertainty. Which additions historically produced real gains, and which were restatements of the same information? Where is the current setup already at its architectural limit, and where could one more independent measurement still move the needle? Please share short, structured notes (method → variables → current error). The goal is a community roadmap of where to invest for genuine accuracy gains.
The paper finds that the tension in measuring the Hubble constant (H₀) is real and hard to resolve with current data. Most existing measurements are already precise and consistent within their groups, leaving little room for errors or simple fixes. To solve the tension, new types of data or fresh theoretical ideas are needed—small changes won’t be eno
- Badges
- Science topic