WMAP
NASA's WMAP (Wilkinson Microwave Anisotropy Probe) spacecraft measured temperature differences across the sky in the cosmic microwave background radiation, a remnant of the big bang.
past Mission
Type
Space telescope
Launch
June 30, 2001
Wavelength
Microwaves
operations ceased
Aug. 19, 2010
![](https://science.nasa.gov/wp-content/uploads/2023/06/wmap-mission-9a656de-jpeg.webp?w=4096&format=png)
Artist's concept of the WMAP (Wilkinson Microwave Anisotropy Probe)
Credit: NASA/WMAP Science Team
Latest NASA News
Keep Exploring