This screenshot is from this recent blog post at Triton Station.
In the year 2007, there were as sweet spot where a lot of cosmology measurements seemed to line up consistently. But, seventeen years later, as a result of new and improved data, this is no longer true, because the cosmic microwave background data from Planck show that the Hubble constant was too small in the early universe and that the cluster baryon fraction was too high.
The Hubble constant measurements (straight horizontal bar) and the Planck cosmic microwave background constraints (which includes an early after the Big Bang Hubble constant measurement) are flatly inconsistent, which is the "Hubble tension."
No comments:
Post a Comment