New Horizons creates first Lyman alpha map of the galactic sky

San Antonio TX (SPX) Apr 30, 2025

The NASA New Horizons spacecraft's extensive observations of Lyman-alpha emissions have resulted in the first-ever map from the galaxy at this important ultraviolet wavelength, providing a new look at the galactic region surrounding our solar system. The findings are described in a new study authored by the SwRI-led New Horizons team. "Understanding the Lyman-alpha background helps shed li