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:
“The primary function of myth is to validate an existing social order. Myth enshrines conservative social values, raising tradition on a pedestal. It expresses and confirms, rather than explains or questions, the sources of cultural attitudes and values.... Because myth anchors the present in the past it is a sociological charter for a future society which is an exact replica of the present one.”
—Ann Oakley (b. 1944)