TNRTB Archive - Retained for reference information
Astronomers discover that solar-type stars younger than 50 million years, in addition to manifesting large unpredictable brightness changes, demonstrate a periodic variability indicative of the growth of huge star spots. A low level of spot growth on a star’s surface is a necessary ingredient for life on one of its planets.
Sarah Tackett, William Herbst, and Eric Williams, “Periodic Variability in the Pre-Main Sequence Object CB 34V,” Astronomical Journal, 126 (2003), pp. 346-352.
RTB video: Journey Toward Creation, 2nd edition
RTB book: The Creator and the Cosmos, third edition