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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SOHO is a project of international cooperation between ESA and NASA. SOHO's EIT (Extreme ultraviolet Imaging Telescope) images the solar atmosphere at several wavelengths and, therefore, shows solar material at different temperatures. In the images taken at 304 Angstroms, the bright material is at 60 000 to 80 000K. In those taken at 171, at 1 million Kelvin. 195 Angstrom images correspond to about 1.5 million Kelvin. The hotter the temperature, the higher you look in the solar atmosphere.