RT @AAS_Press: Rice: Protostars make waves first, planets later; study leads to discovery of spiral arms in protoplanetary disks news.rice.edu/2016/09/29/pro…
RT @AAS_Press: Rice: Protostars make waves first, planets later; study leads to discovery of spiral arms in protoplanetary disks news.rice.edu/2016/09/29/pro…