The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 23 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
Go to topicProtecting life and infrastructure on Earth and in orbit
Go to topicUsing space to benefit citizens and meet future challenges on Earth
Go to topicMaking space accessible and developing the technologies for the future
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Carrying three payloads plus a number of experiments, Artemis (Advanced Relay and Technology Mission Satellite) has been developed to test and operate new telecommunications techniques.
The L-band mobile payload allows two-way communications, via satellite, between fixed Earth stations and land mobiles - trucks, trains or cars - anywhere in Europe and North Africa.
In parallel, ESA is exploring advanced technology to transmit data directly from one satellite to another, both conventionally - using radio waves - and in a revolutionary new way using laser beams.
Artemis carries two payloads for communications directly between satellites, which will receive data from low-Earth-orbiting satellites and transmit them directly to Europe:
-a laser-optical relay terminal called SILEX,
-a double S/Ka-band terminal called SKDR.