atomic2URLhttp://portal.discoverthecosmos.eu/node/201116Nebulaennebuladraft1.0author2013-09-11Simona MagureanupublisherenLOM v1.0creator2013-09-11Simona Magureanuvalidatorbrowserms-internet explorerosms-windowstext/htmlhttp://portal.discoverthecosmos.eu/node/201116nonoactivevery lowvery easy0.25 didactic hourvideoslideInquiry-Based TeachingProject-Based Learningschool education DisciplineAstronomy: Nebula