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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This Envisat's Advanced Synthetic Aperture Radar (ASAR) image shows Lisbon and the surrounding area. The city, capital of Portugal, is visible as a large bright area and is situated on the mouth of the Tagus River, which flows from the top centre of the image. The image is a multitemporal colour composite and is made of three ASAR images acquired on different dates and assigning a colour (RGB) to each date (Red : 26 October 2003, Green : 17 August 2003, Blue : 4 May 2003).