Ariane 5 on a previous mission. Credit: Arianespace.
SpeedCast logo accompanied by container ship.
Artist's concept of Lockheed Martin's GPS 3 satellite. Credit: U.S. Air Force
David Parker, U.K. Space Agency chief executive. Credit: UKSA
Image from an SES-9 fact sheet.
Artist's concept of lunar base. Credit: Alliance for Space Development
Sea Launch lofts rockets from a floating platform in the Pacific Ocean. Credit: Sea Launch
Skynet 5 satellite
Jerry Fuller, Aerospace Corp. mechanical designer, prepares two AeroCube 6 satellites for integration. Credit: Aerospace Corp.
A breakdown of XCOR's Lynx spaceplane. Credit: XCOR
Alphasat is a large telecommunications satellite primarily designed to expand Inmarsat’s existing global mobile telecommunication network. It was engineered and built by Astrium through a public–private partnership (PPP) between ESA and Inmarsat.

It is the largest European telecom satellite ever built, exceeding 6.6 tonnes at launch. Its solar array, spanning almost 40 m, generates more than 12 kW of power.

Alphasat is based on Alphabus, the new European telecom platform developed by Astrium and Thales Alenia Space under a joint contract with ESA and France’s CNES space agency. Credit: ESA
SpaceX founder Elon Musk  made a splash in January when he announced plans to circle the globe with a consolation of Internet-delivery satellites. Since then, additional details have been relatively few and far between. Credit: SpaceNews illustration by Lance Marburger
Pete Worden. Credit: Breakthrough Initiatives
Credit: ULA
Gaele Winters, ESA director of operations and infrastructure. Credit: ESA, Jürgen Mai

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