Existing Interstellar Probes
Five spacecraft (three active spacecraft) are currently on interstellar trajectories, unless they hit something after they stop communicating.
Read more about this topic: Interstellar Probe
Famous quotes containing the word existing:
“Losing life is a trifle and I will have that courage when I need it. But to see the meaning of this life vanishing, our reason for existing disappearing, that is what I cannot stand. No one can live without reason.”
—Albert Camus (1913–1960)