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Firefly Aerospace Onboards Zeno Power on Blue Ghost Mission to Demonstrate Radioisotope Technologies to Survive the Lunar Night

$FLYPress releaseAug 19, 2026, 8:00 AM ETRead the release

Firefly Aerospace announced a commercial payload agreement with Zeno Power Systems to fly a Survive-the-Night Package on a future Blue Ghost mission to the Moon's near side. Scheduled for launch no earlier than 2028, the mission will demonstrate a 5-Watt thermal americium-241 Radioisotope Heater Unit (RHU) designed to keep spacecraft operational during the extreme cold of the 14-day lunar night.

Key figures

Temp low f
-275
Launch year
no earlier than 2028
Temp high f
230
Rhu power output
5 Watts thermal
Temp low extreme f
-280
Lunar day duration earth days
approximately 14
Lunar night duration earth days
14

AI analysis

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