Editing Cosmic microwave background (section)

===Wilkinson Microwave Anisotropy Probe===
{{main |Wilkinson Microwave Anisotropy Probe}}
In June 2001, [[NASA]] launched a second CMB space mission, [[WMAP]], to make much more precise measurements of the large-scale anisotropies over the full sky. [[WMAP]] used symmetric, rapid-multi-modulated scanning, rapid switching radiometers at five frequencies to minimize non-sky signal noise.<ref name="FirstWMAP"/> The data from the mission was released in five installments, the last being the nine-year summary.
The results are broadly consistent [[Lambda CDM]] models based on 6 free parameters and fitting in to Big Bang cosmology with [[cosmic inflation]].<ref name=WMAP9Map>{{Cite journal |last1=Bennett |first1=C. L. |last2=Larson |first2=D. |last3=Weiland |first3=J. L. |last4=Jarosik |first4=N. |last5=Hinshaw |first5=G. |last6=Odegard |first6=N. |last7=Smith |first7=K. M. |last8=Hill |first8=R. S. |last9=Gold |first9=B. |last10=Halpern |first10=M. |last11=Komatsu |first11=E. |last12=Nolta |first12=M. R. |last13=Page |first13=L. |last14=Spergel |first14=D. N. |last15=Wollack |first15=E. |date=2013-09-20 |title=NINE-YEAR ''WILKINSON MICROWAVE ANISOTROPY PROBE'' ( ''WMAP'' ) OBSERVATIONS: FINAL MAPS AND RESULTS |url=https://iopscience.iop.org/article/10.1088/0067-0049/208/2/20 |journal=The Astrophysical Journal Supplement Series |volume=208 |issue=2 |pages=20 |doi=10.1088/0067-0049/208/2/20 |issn=0067-0049|arxiv=1212.5225 |bibcode=2013ApJS..208...20B }}</ref>