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 topicThe Yangtze River has some of the most turbid waters in the world. This MERIS reduced resolution image from 25 May 2005 was processed with BEAM software. It shows the high concentrations of total supended matter at the mouth of the Yangtze River. However, since the present neural network algorithm was limited to 50 mg/l some areas of the Yangtse river have much higher concentrations, i.e. the colour bar at the right end (red9 means 50 mg/l and above.