Meredith MacGregor, assistant professor in the Center for Astrophysics and Space Astronomy (CASA) at °ÄÃÅ¿ª½±½á¹û2023¿ª½±¼Ç¼, spoke about the science of James Webb in a new Fiske Planetarium event series sponsored by Colorado-based Ball Aerospace, which designed and built the telescope’s unfolding mirror.