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Science-Related Homework Help Physics Topic started by: barry on Aug 2, 2013



Title: How have Hubble images revised our view of the structure of planetary nebulae, a
Post by: barry on Aug 2, 2013
How have Hubble images revised our view of the structure of planetary nebulae, and even the potential for the Sun to become one?


Title: Re: How have Hubble images revised our view of the structure of planetary nebulae, a
Post by: doseofmegan on Aug 3, 2013
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Title: Re: How have Hubble images revised our view of the structure of planetary nebulae, a
Post by: nite_n_day on Aug 3, 2013
Instead of just spherical shells, we know that many if not most planetary nebulae are bipolar ejections; often the appearance of a "ring" comes from the dual lobes coming directly at us and away from us.  The intricate structure suggests that magnetic fields are molding the nebulae, and that perhaps the rotation and perturbation of a companion star may be often involved. It may be that only binary stars can produce these spectacular stellar shrouds.


Title: Re: How have Hubble images revised our view of the structure of planetary nebulae, a
Post by: barry on Aug 3, 2013
Thank you both