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Significats de planetary nebulae en anglès
Encara no tenim significats per a "planetary nebulae".
Ús de planetary nebulae en anglès
1
The Great Ringmaster pulled planetary nebulae seemingly out of nowhere.
2
The average radial velocity of 47 planetary nebulae is about 45 km.
3
Whether the Wolf-Rayet stars have in general been formed from planetary nebulae is a different question: some of them certainly have.
4
Gravity eventually brings the nebular particles into closer aggregations, and increased collisions finally vaporize the entire mass, forming planetary nebulae and gaseous stars.
5
Dark Nebulae, star forming Regions or Emission Nebulae, Supernovae Remnants and Planetary Nebulae.
6
Planetary nebulae with asymmetrical wings of nebulosity are common.
7
In the stages of concentration the planetary nebulæ might well repeat those through which the greater solar mass proceeded.