Humans have always sought to explore. After the seafaring explorers of the 16th century, 21st century cosmologists today navigate celestial oceans, each mission providing a broader and more impressive cartography of our surroundings. At the avant-garde of modern technology, these strange travelers are actually immobile, and their vessels are powerful and spectacular telescopes, on the Earth or in space, constantly expanding the limits of our knowledge and giving form to our dreams of infinity. From Hawaii to Australia, via South Africa and China, we set out on an incredible scientific and human adventure to visit the planet's greatest cosmic exploration centers to discover the new challenges involved in understanding the universe. A journey on Earth and in the skies that will take your breath away!