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>The lifetime of the satellites is about 5 years give or take. According to this page [1], a total of 355 satellites have deorbited over the past roughly 5 years.

Wow ... is it economical to replace the entire constellation every 5 years? How does the business side work? Or is it just a great money-burning party?

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This is a large part of why they're pushing so hard on Starship. Falcon 9 is great and wildly economical, but it's not enough to make Starlink profitable in the long term. They need Starship to make that happen.

They also want to make Starlink satellites bigger, which also requires Starship's much larger diameter.

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