Ancient Stars Ignite Early Earth's Evolution
Researchers have discovered an older, evolved star known as an asymptotic giant branch (AGB) passing through a young star-forming region, challenging previous assumptions. These retired AGB stars produce Aluminum-26 and Iron-60, which were delivered to our young solar system and are believed to have played a role in heating the early Earth and contributing to plate tectonics. The finding suggests that other sources, such as winds and supernovae of massive stars, may not be necessary to explain the origin of these chemical elements in our solar system. Further research will focus on identifying other evolved stars in young star-forming regions to determine their prevalence.