The single WMAP spacecraft launched on June 30, 2001 aboard Delta II D286 and traveled by lunar-assisted trajectory to the Sun-Earth L2 region, where it conducted a nine-year microwave sky survey.
NASA · NASA Scientific Visualization Studio image used editorially under NASA Images and Media Usage Guidelines · Source
The single WMAP spacecraft launched on June 30, 2001 aboard Delta II D286 and traveled by lunar-assisted trajectory to the Sun-Earth L2 region, where it conducted a nine-year microwave sky survey.