What happens to all the mission spaceships once the mission is over?

Question

e.g. rovers; spirit/opportunity, cassini, hubble, voyager, etc...
do they ever come back to earth, or when they stop working, they stay out there somewhere ... if yea .. don't you think we're creating garbage out there?

Answer 1

Hi. Those on planets or moons stay there for future treasure hunters. Those in space usually continue to orbit the Earth, orbit the Sun, or travel into interstellar space. The ones in Earth orbit eventually enter the atmosphere.

Answer 2

if it is a manned mission then ethier it is thrown away or it is reused,If it is not a manned mission then they just leave it in space.