Cesium: Solar System Sandcastle Example

[hanbollar]

I just noticed that all the planets are actually present in cesium along with the moon - it would be an awesome demo if while viewing earth the other planets were highlighted / labeled and if you clicked on them you "zoomed" to them by either manual movement or switching out earth with the sizing/shape/ellipsoid of whatever planet was clicked or at least showed the label of which planet is which - since currently there's nothing highlighting this feature

[hpinkos]

@hanbollar Cesium can currently only have one central body/globe. We do model the moon and sun positions and have a textured ellipsoid for the moon, but I don't think we currently model the other planets. And non-earth ellipsoid support is a little unpredictable right now.

[cmarmo]

Hi, thanks to a European funding (EuroplanetH2020), a generic Solar System bodies implementation in Cesium has been drafted.
The code is not in shape for a pull request and future funding is uncertain, but it is available on github and a demo is available here.
Feel free to use it or add it in the demo page.

[hpinkos]

Thanks or sharing @cmarmo! Yeah, this looks like a great project to share on our Demos page. @slchow what do you think?

[slchow]

Yes, let's showcase! I'm in touch with @cmarmo