The measurements of the Hubble parameter using the cosmic microwave background radiation appear to be inconsistent with the measurements of this parameter using Cepheid variable stars. This inconsistency may be a result of using the CDM cosmology, which assumes pressureless dark matter, in extrapolating the data from the recombination time to the present time. We show that both measurements are consistent if dark matter satisfies an equation of state in which the pressure p and the energy density are related by p = w with a negative value of w. The data give w ≈ −0.01. The negative value of w indicates that dark matter would not be formed by particles, which is consistent with the lack of experimental evidence for them.The observations of the temperature angular power spectrum of the cosmic microwave background (CMB) radiation provide the information about the composition of the universe [1]. The measurements of the position of the first acoustic peak show that the universe is nearly flat, with the density parameter ≈ 1. The measurements of the amplitudes of the peaks determine the values of b h 2 and c h 2 , where b is the density parameter for baryonic matter, c is the density parameter for dark matter, and the present-day Hubble parameter H 0 = 100h km/s/Mpc. Combining these values with the measured h = 0.674 ± 0.005 gives (omitting errors) b = 0.049 and c = 0.265, as obtained by the Planck satellite [2,3]. Consequently, the density parameter for total matter is m = 0.314.Before the Planck measurements, most measured values of h also clustered around 0.68, including the data from high-redshift type Ia supernovae (SN Ia) [4,5], Wilkinson Microwave Anisotropy Probe CMB data [6], baryon acoustic oscillations (BAO) [7], SN Ia and BAO data [8], measurements of the Hubble parameter at intermediate redshifts [9], and large-scale-structure data [10]. Assuming a flat universe, = 1 − m = 0.686 for dark energy (cosmological constant). The resulting age of the universe is t univ = a e-mail: NPoplawski@newhaven.edu da/(a H) =