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Voyager 2 has been sailing through space for 49 years—nearly eight of them beyond the heliopause—while losing roughly four watts of power annually. In July 2026, engineers completed a risky all-at-once systems swap nicknamed the “Big Bang,” buying its t -
Voyager 2 has been sailing through space for 49 years—nearly eight of them beyond the heliopause—while losing roughly four watts of power annually. In July 2026, engineers completed a risky all-at...