NASA's upcoming James Webb Space Telescope will not be a replacement for its Hubble telescope, despite how similar they might at first seem. Like Earth-based telescopes, space telescopes scan the galaxies, picking out clues that might help unlock the secrets of the universe. However, because such telescopes are not tied to Earth, they can roam, allowing them the freedom to peer into parts of space that might otherwise be out of view.
The space telescope concept dates back to the mid-1800s when
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