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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In a first step towards uncovering the Moon’s subterranean secrets, in 2019 we asked for your ideas to detect, map and explore lunar caves. Five ideas were selected to be studied in more detail, each addressing different phases of a potential mission.
This mission concept investigated exploring and characterising the entrance and initial part of lunar lava tubes using a compact, tightly integrated spherical robotic device, with a complementary payload set and autonomous capabilities. It specifically addressed the identification and characterisation of potential resources for future ESA exploration missions, the local environment of the subsurface and its geological and compositional structure. The sphere would house laser scanners, cameras and supporting equipment, and would be lowered into the skylight to explore the entrance, associated caverns and pipes. Lidar systems will produce 3D models of the environment; this will be the primary exploration toolset within the sphere.