Welcome to NASA's data center for Cosmic Microwave Background (CMB) research

Lambda Logo and Satellite Collage

LAMBDA is a part of NASA's High Energy Astrophysics Science Archive Research Center (HEASARC). This site is a multi-mission NASA center of expertise for cosmic microwave background (CMB) radiation research; it provides CMB researchers with archive data from cosmology missions, software tools, and links to other sites of interest. As a resource for the CMB community, your suggestions are encouraged.

LAMBDA exists to serve the CMB research community, and the greater cosmological research community. In particular, LAMBDA:

  • develops and maintains data archives
  • develops and maintains data access and analysis tools
  • offers scientific expertise on NASA's CMB missions
  • carries out data-intensive processing of vital importance to NASA's CMB community
  • conducts education and outreach efforts aimed at the general public.

There is no cost involved in the use of LAMBDA. However, if your research benefits from its use then we request that you include the following acknowledgement in your publications:

"We acknowledge the use of the Legacy Archive for Microwave Background Data Analysis (LAMBDA), part of the High Energy Astrophysics Science Archive Center (HEASARC). HEASARC/LAMBDA is a service of the Astrophysics Science Division at the NASA Goddard Space Flight Center."

If you are not a researcher, you may still find interesting information on the WMAP Public Site and our theory site links.

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason