Solar System Debris
 
 
A comet in the sky Long-Distance Caller (1996)
This picture was a commission for the cover of the UK magazine Quest , in June 1997. The image's title is indicative of the fact that many comets come from way beyond the Solar System — taking millions of years to get here — and are in essence only just visiting.
See also
A comet passes in front of the Earth and Moon
A fragmented comet impacting a gas giant planet, inspired by Shoemaker-Levy-9
A close up of the nucleus of a comet