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DESI Legacy Imaging Surveys releases 5.6-trillion-pixel 2D map of the universe
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The DESI Legacy Imaging Surveys has released the largest-ever 2D color map of the universe, combining over 263,000 telescope exposures into a 5.6-trillion-pixel dataset containing nearly 4 billion celestial objects.
The publicly available dataset serves as a foundational reference for astronomical research and upcoming telescope surveys, enabling investigations into dark matter, dark energy, and rare phenomena like gravitational lenses.
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The 5.6-trillion-pixel map covers roughly 75% of the sky in visible and near-infrared light, containing nearly 4 billion celestial objects.
The dataset was built by combining 263,407 telescope exposures from three ground-based surveys and supplemented by data from NASA's WISE satellite mission.
The map serves as the foundation for the Dark Energy Spectroscopic Instrument (DESI) survey to build the largest high-resolution 3D map ever made and investigate dark energy.
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