Since the dawn of the Space Age, they have depended on radio waves, just a sliver of the electromagnetic spectrum. But scientists hope to soon expand into another part of the spectrum. Their aim is to add lasers to our cosmic communications toolkit.
It also represents a key step in opening a new era in space communications. If this and related tests work as expected, lasers will offer a needed boost for the bandwidth limits faced by the major off-planet communications system, called the Dee.
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