[["Blue walker three is a prototype satellite designed by AST Space Mobile. The spacecraft was built with an aperture of 693 square feet to establish connectivity directly with cell phones via 3GPP-standard frequencies.", 3.0], ["What is blue walker three?\nBlueWalker 3 is AST SpaceMobile\u2019s prototype satellite designed to operate with standard, unmodified mobile devices. It was built with an aperture of 693 sq ft to establish connectivity with cell phones via 3GPP-standard frequencies. ", 2.0]]
what is blue walker three
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