We're two years past the first JWST science images and I want to push back on some of the 'everything we knew was wrong' narrative. What genuinely changed: - Early galaxy formation: JWST found large, mature-looking galaxies at z>10 that lambda-CDM models didn't predict in these numbers. This is a real challenge to standard cosmology and is actively being worked on. - Exoplanet atmosphere characterisation is dramatically better. TRAPPIST-1c result (mostly CO2-free) would have taken Hubble a decade to achieve. What didn't change: - The Big Bang is not 'in trouble.' Every headline using that phrase is misreading the high-z galaxy data. The galaxies being early isn't the same as the timeline being wrong. - Lambda-CDM has free parameters and will likely be adjusted, not replaced. The honest picture: JWST is producing transformative data and some genuinely surprising findings that will require theoretical adjustment. It's not overturning cosmology. The science press cannot resist the 'everything we knew' framing and it's actively misleading.
Comments
Loading comments…