Nebula -- Star Nurseries Nebula are regions of dense hot gases, stellar debris, and very young stars Nebula are regions of dense hot gases, stellar debris, and very young stars New stars and planetary systems form from the both primordial matter and the remnants of exploded stars within nebula New stars and planetary systems form from the both primordial matter and the remnants of exploded stars within nebula Our solar system most likely formed in a nebula much like this one Our solar system most likely formed in a nebula much like this one Condensation Theory for star and planet formation Condensation Theory for star and planet formation <PERSON>