; maintenance and repair, facility planning and design; space flight, spacecraft control, and communications activities; program management; personnel and related costs, including uniforms or allowances therefor, as authorized by sections 5901 and 5902 of title 5, United States Code; travel expenses; purchase and hire of passenger motor vehicles; and purchase, lease, charter, maintenance, and operation of mission and administrative aircraft, $6,905,700,000, to remain available until September 30, 2021: Provided , That, $1,945,000,000 shall be for Earth Science; $2,631,100,000 shall be for Planetary Science; $1,171,600,000 shall be for Astrophysics; $423,000,000 shall be for the James Webb Space Telescope; and $735,000,000 shall be for Heliophysics: Provided further , That the National Aeronautics and Space Administration shall use the Space Launch System as the launch vehicle for the Jupiter Europa Clipper mission. Aeronautics For necessary expenses, not otherwise provided for, in the conduct and support of aeronautics research and development activities, including research, development, operations, support, and services; maintenance and repair, facility planning and design; space flight, spacecraft control, and communications activities; program management; personnel and related costs, including uniforms or allowances therefor, as authorized by sections 5901 and 5902 of title 5, United States Code; travel expenses; purchase and hire of passenger motor vehicles; and purchase, lease, charter, maintenance, and operation of mission and administrative aircraft, $783,900,000, to remain available until September 30, 2021. Space Technology For necessary expenses, not otherwise provided for, in the conduct and support of space technology research and development activities, including research, development, operations, support, and services; maintenance and repair, facility planning and design; space flight, spacecraft control, and communications activities; program management