Description	Symbol	ΛCDM	ΑΛΩ	Comments
Age of the universe (cosmic)	t_Ω [Gy]	13.799 (obs.) 46	13.799 (obs.) 76.1	The MW is at cosmic time 13.8 [Gy]
Total density parameter	Ω_tot	1	1
Hubble constant	H₀ [km·s⁻¹·Mpc⁻¹]	67.4 ± 0.5	70.9	$H_{0} = 1 / t [s^{- 1}]$
Baryonic density	Ω_b	0.0486	0.03045	Less baryonic matter
Dark matter density	Ω_cdm	0.2664	0	Dark matter is not a parameter of the model
Matter density	Ω_m	0.315	0.03045	Baryonic matter only
Dark energy density	Ω_Λ	0.685	0	Mass and/or photon energy only, except for curvature k
Radiation energy density	Ω_r or Ω_Λ	$Ω_{r} = 10^{- 5}$	$Ω_{Λ} = 0.96893$	The cosmological constant represents radiation energy
Curvature energy density	Ω_k	+0.001 ± 0.002	0.00062	Curvature energy is of unknown origin
Cosmic neutrino mass	m_ν [eV]	$Σ m_{ν} \leq 0.12$	≤48 × 10³ [eV]	The cosmic neutrino is estimated with the muonic neutrino with β SN1987A