Cited work
Planck 2018 results. VI. Cosmological parameters
Planck Collaboration · Astronomy & Astrophysics · 2020
Observational survey · doi:10.1051/0004-6361/201833910
CMB power spectrum constrains ΛCDM parameters, fixing the age of the universe at 13.80 ± 0.02 Gyr.
CMBFull-sky