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ESA's cosmic observers, illustration
ESA's cosmic observers, illustration. The European Space Agency (ESA) spacecraft, satellites and space telescopes shown here observe the universe across the electromagnetic spectrum, from microwaves to gamma rays and gravitational waves. These missions enable astronomers to study subjects such as the origin and evolution of our universe, from its beginnings to today's stars and galaxies, and the fundamental laws of nature. Image published in 2019.
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