Meet the largest science project in US government history—the James Webb Telescope

Since Galileo first discovered the moons of Jupiter and the phases of Venus, telescopes have gotten larger, more accurate, and more powerful. They’re now installed all around the world from mountaintop observatories to suburban backyards. And over those 350 years, all of them have battled the same enemy: our Earth’s atmosphere.

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Story added 28. March 2016, content source with full text you can find at link above.