Caption: 
Prior to launch, the PUNCH spacecraft were attached to the gold-colored ESPA ring designed to deploy secondary payloads, below NASA’s SPHEREx observatory, to cost-effectively share a ride to space. PUNCH’s four small suitcase-sized spacecraft, designed and built by Southwest Research Institute, will revolutionize our understanding of how the solar corona, the Sun’s outer atmosphere, becomes the solar wind that fills and defines our heliosphere. 