Since Galileo first pointed a telescope skyward in 1608 and saw farther than any human ever had before, astronomers have strived to peer ever deeper into space and, because of what's now known about the speed of light, back in time. Some four centuries later, hopes of continuing this quest by detecting the universe's first light are now vested in the James Webb Space Telescope, the biggest, most powerful, most complicated, most expensive and - not unrelatedly - most delayed space telescope in history.
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