... The North America Nebula in Infrared . ... Credit Copyright: NASA , JPL-Caltech , L. Rebull ( SSC, Caltech ); Optical Rollover: DSS , D. De Martin Explanation: The North America Nebula can do what most North Americans cannot -- form stars. Precisely where in the nebula these stars are forming has been mostly obscured by some of the nebula's thick dust that is opaque to visible light. ... Publications with keywords: North America Nebula - infrared - Spitzer space telescope . ...