Category Archives: planetary nebulae

The Expansion Proper Motions of the Planetary Nebula NGC 6302 from HST imaging

C. Szyszka, A. A. Zijlstra and J. R. Walsh (2011) have used Montage in their study of the expansion proper motions of planetary nebulae. Planetary nebulae expand on time scales of 103–104 yr, and for the closest nebulae, this can be detected within … Continue reading

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