The observatory has been traveling for nearly a month to reach the second Lagrange point.
Webb’s destination—the second Lagrange point, or L2—is useful because it allows any telescope there to keep the Sun, Earth, and the Moon in a line behind it, giving an
unobstructed view out into the universe. L2 is also a relatively stable point in orbit around the Sun, enabling the spacecraft to use minimal fuel to stay in position there.
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