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
Go to topicInvestigating Mercury's mysteries
BepiColombo will be the second and most complex mission ever to orbit Mercury. Close to the Sun and more difficult for an orbiter to reach than Saturn, this small desert world is the least explored planet of the inner Solar System. Learning more about Mercury will shed light on the history of the entire Solar System.
Packed with scientific instruments, the mission will try to answer many perplexing questions, such as: Why is there ice in the polar craters of the scorched planet? Why does Mercury have a magnetic field? And what are the mysterious 'hollows' on its surface?