Pulsar wind nebulae (PWNe) are nebulae powered by the wind of a pulsar ...For this purpose, they performed deep Chandra observations of this nebula and analyzed archival data from this spacecraft.
Planetary nebulae like the Crystal BallNebula (NGC 1514) are sort of like stellar obituaries. Though crystal balls supposedly reveal the future, the Crystal Ball Nebula tells us more about the past ... Planetary nebulae have nothing to do with planets.
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