COsmic Background Explorer (COBE) map (1993)

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COsmic Background Explorer (COBE) spectrum (1989)

The resulting CMB temperature (Fixen 2009)

Maps from balloon-borne instruments (2000/2001)

BOOMERAnG <	MAXIMA   CBI
DASI

WMAP Wilkinson Microwave Anisotropy Probe (2003)

WMAP total

WMAP including dipole

WMAP Wilkinson Microwave Anisotropy Probe (2006)

WMAP Polarization

WMAP Wilkinson Microwave Anisotropy Probe (2008)

Planck Satellite (2013)

WMAP Power Spectrum (2003)

WMAP Power Spectrum (2006)

TE EE ···BB Polarization

WMAP Power Spectrum (2008)

Planck + WMAP + Atacama Cosmology Telescope + South Pole Telescope Power Spectrum (2013)

The horizontal scale is logarithmic up to l = 100, linear thereafter.

Dependence of CMB power on cosmological parameters (Hu & Dodelson 2002)