Senior Astrophysicist, Harvard-Smithsonian Center for Astrophysics
New research indicates that globular clusters—collections of up to a million stars—could provide stable environments for life, along with opportunities for interstellar civilizations. Lead author Rosanne Di Stefano joins us to explain. Emily Lakdawalla and Bill Nye examine the science and excitement around “Planet 9.” “This Week in Space History” is just one feature of our What’s Up segment with Bruce Betts and Mat Kaplan.
ESA / Hubble
Messier 5 is a globular cluster containing hundreds of thousands of stars. It is about 25,000 light years from our solar system.