Disks have also been observed around many young stars; astronomers often call them protoplanetary disks because they appear to be similar to the one that must have formed our own solar system.

• 许多年轻恒星的周遭也可发现圆盘的踪影；天文学家通常称它们为原生行星盘，因它们看来与太阳系所赖以成形的那个圆盘类似。