Astronomers have detected nearly 2,000 alien planets to date. As that number continues to rise, so too does the prospect of finding intelligent extraterrestrial life.
In terms of the search for extraterrestrial intelligence (SETI), it may no longer be a matter of answering the "are we alone" question, some scientists say. Rather, just how crowded is the universe?
And if ET is out there, it may be possible to reach out with direct "radio waving" to potentially habitable exoplanets. This form of cosmic cryptography, called "Active SETI," involves no longer merely listening for a signal but purposefully broadcasting to, and perhaps establishing contact with, other starfolk. [13 Ways to Hunt Intelligent Alien Life]
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