Assertion: nebula's light | /r/HasProperty | emitted
Facets:
Source sentences:
text: Analysis of the reflected spectra indicated the light was emitted when Eta Carinae had the appearance of a 5,000 K G2-to-G5 supergiant, some 2,000 K cooler than expected from other supernova impostor events.
text: This was likely due to neutrino emission, which occurs simultaneously with core collapse, but before visible light was emitted.
text: Visible light is emitted when electrons recombine with the ionized hydrogen, which is seen as beautiful red colors of emission nebulae.