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Mostly need money to fund them. There are various proposals in US/EU/China: https://en.wikipedia.org/wiki/Interstellar_probe#Proposed_missions https://en.wikipe

by pkaye 2y ago

Mostly need money to fund them. There are various proposals in US/EU/China: https://en.wikipedia.org/wiki/Interstellar_probe#Proposed_missions https://en.wikipedia.org/wiki/Interstellar_probe#Proposed_mi...