At least half the young stars in the Orion Nebula appear to be surrounded by disks of gas and dust, thought to contain many times as much matter as would be needed to create a planetary system like the Solar System.
Vroče modre zvezde, ki so zadosti masivne in vroče, da ionizirajo znatno količino vodika in formirajo H II regijo, bodo to naredile hitro in razsvetlile območje, ki so ga ravnokar ustvarile.