Again, that is an outdated result, using the WMAP satellite from ~15 years ago instead of e.g. Planck or newer ground-based observatories such as POLARBEAR. WMAP does not have the sensitivity to detect CMB gravitational lensing.
Again, that is an outdated result, using the WMAP satellite from ~15 years ago instead of e.g. Planck or newer ground-based observatories such as POLARBEAR. WMAP does not have the sensitivity to detect CMB gravitational lensing.