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 topicThank you for liking
You have already liked this page, you can only like it once!
This Envisat Advanced Synthetic Aperture Radar (ASAR) multitemporal composite image highlights coastal destruction - including damaged coral reefs - on North Sentinel Island, part of the Andaman Islands in the Bay of Bengal. Radar images measure surface roughness rather than reflected light. The colour in the image comes from combining two separate ASAR images acquired on different dates in order to highlight differences between them. The yellow (combining red and green) is matched to a 3 June 2004 acquisition while the blue is matched to a post-tsunami acquisition on 30 December 2004. North Sentinel Island is home to a small indigenous tribe that refuses contact with the outside world. They are reported to have survived the severe damage done to the island.