No. of Recommendations: 1
Well, a considerable number of man-made photons have left the solar system. Not just in the modern era - even building a fire on a clear night would launch photons into space, and they will leave the solar system within hours if they don't hit anything. It's really stretching the definition to call them objects, though.
Print the post  

Announcements

Closure of the UK Discussion Boards
The UK Discussion Boards are now closed to new posts.