Matter power spectrum Wavelengthλ[h-1Mpc] 104 1000 100 10 10 104 a1000 100 Cosmic Microwave Background ● SDSS galaxies ☆ Cluster abundance 10 a Weak lensing ▲ Lyman Alpha Forest il 0.001 0.01 0.1 10 Wavenumber k [h/Mpc]Matter Power Spectrum