Celesta (beta 4)

Controls:

Press Right Mouse Button (RMB) to paint single objects 

Press+Hold RMB and Drag to paint multiple objects 

Press Left Mouse Button (LMB) to clear an object

 Choose Planet, Comet, Asteroid from dropdown option. 

LMB and drag change main color for Planet option with RGB color scrolls. 

LMB and drag change Size, Glow and Opacity for Planet option with scrolls. 

LMB and drag change Size for Comet and Asteroid option with scrolls.

LMB click on the Clock's hour/min indicators to change Space View.