Dr Meghan Gray uses our discussion of Messier 10 (a globular cluster) as an excuse to talk about the six key components of an orbit.
More Messier Object videos: http://bit.ly/MessierObjects
Paper discussed: http://arxiv.org/abs/astro-ph/9806245
Correction: «Rosette orbit» not «rosette nebula»
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Video by Brady Haran
