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SpaceX ultimately wants to recover every stage of a rocket, not just the first, and it may resort to some unusual tactics to make that happen. Elon Musk has claimed that his company will try to take rocket upper stages out of orbital velocity using a "giant party balloon" -- yes, he knows it sounds "crazy." He hasn't shed more light on the subject as we write this, but we've reached out to SpaceX to see if it can elaborate.
If such a system works out, it could provide more than a few benefits to SpaceX. As of 2018, SpaceX estimates a cost of $62 million to launch a Falcon 9 rocket with a first stage landing factored in. If it can reliably recover the upper stage with a relatively low-cost method like a balloon, it can both reduce its own expenses and make launches more attractive to customers. Throw in the eco-friendliness (there's no dead stage plummeting to Earth) and it could easily be worth attempting to use a balloon, however ludicrous the idea might sound at first blush.
SpaceX will try to bring rocket upper stage back from orbital velocity using a giant party balloon— Elon Musk (@elonmusk) April 15, 2018
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RT @Japes_USU: In an attempt to reuse 100% of the Falcon 9 parts, SpaceX will try 'giant party balloon' to slow upper rocket stages. #spac…
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