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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Principe Island, 29 May 1919. Marked on a negative photo of the 1919 solar eclipse are the positions of stars examined in the historic test of Einstein's theory of gravity (from Memoirs of the Royal Astronomical Society LXII, Appendix Plate 1). Enquiries about reproducing this and related totality images should be addressed to the Library of the Royal Astronomical Society, London.