Mmastodon ScienceScience first seen 1 d ago, last 12 h ago, peak #1

Hubble tension persists despite JWST checks

Original: 🔭 The universe has an expansion-rate problem. Local distance-ladder measurements put H₀ near 73 km/s/Mpc. Early-universe

Cosmologists are highlighting the ongoing Hubble tension: local distance-ladder measurements put the expansion rate, H0, near 73 km/s/Mpc, while early-universe data interpreted through the standard Lambda-CDM model give roughly 67-68. New checks from the James Webb Space Telescope have reduced some suspected systematics in the local measurements, but the discrepancy between the two values remains unresolved, pointing to a possible gap in our understanding of cosmic expansion.

Why now: New JWST observations have revived debate over whether the discrepancy hints at new physics beyond the standard cosmological model

James Webb Space TelescopeLambda-CDM modelHubble constant

Open on mastodon →

Rank over time, top of the chart is #1. 16 snapshots from 1 d ago to 12 h ago.

Evidence

• 🔭 The universe has an expansion-rate problem. Local distance-ladder measurements put H₀ near 73 km/s/Mpc. Early-universe data interpreted through ΛCDM give about 67–68. JWST has reduced some suspected systematics, but the tension remains. https://www.… · nexthorizon · 23

API: https://socialmediatrends-api.osmike.com/v1/trends/4644432