Hubble study finds nearby galaxies with the fastest winds let the smallest fraction of ionizing radiation escape

The University of Michigan-authored account published by SciTechDaily reports that Hubble observations of nearby starburst galaxies linked the fastest winds to the smallest fraction of escaping ionizing radiation. That challenges a proposed role for supernova-driven winds in reionization. Researchers suggest activity near young stars could help radiation escape before large winds form, but observations of nearby galaxies do not establish what happened in the early universe.