这是哈勃望远镜拍摄到的猎户星云中的原行星盘(proplyds,protoplanetarydisks)。
A Hubble Space Telescope image shows " proplyds ," or protoplanetary disks , in the Orion Nebula .
磁场、粘性和非轴对称性对原行星盘引力不稳定性的影响
Effects of Magnetic Fields , Viscosity , and Nonaxisymmetry on Gravitational Instability in Protoplanetary Disks