Home file-20230628-23-52qepf-768x652 file-20230628-23-52qepf-768×652 by Magic of science 3 years ago3 years ago If the star Baekdu used to be a binary, there are two scenarios which can explain the survival of the planet Halla. (Brooks G. Bays, Jr, SOEST/University of Hawai’i)