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https://www.nasa.gov/press-release/nasa-awards-launch-services-contract-for-goes-u-mission Why would they use Falcon-Heavy instead of Falcon-9 FT for the GOES-U 2024 satellite launch?

Falcon-9 FT has the following specifications to geosynchronous orbit. 5,500kg to GTO reusable, 8,300kg to GTO expendable. https://en.wikipedia.org/wiki/Medium-lift_launch_vehicle

And according to https://en.wikipedia.org/wiki/GOES-U the launch mass of the GOES-U is only 2,800kg, which is well within the range of an ordinary reusable FALCON-9 FT, so why would the contract specify using FALCON-HEAVY? Also, could this change to Starship? Starship should have launched several flights by 2024 ...

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