There are three ways to look for evidence of alien technological civilizations. One is to look out for deliberate attempts by them to communicate their existence, for example, through radio broadcasts ...

Tabby’s Star in infrared (left) and ultraviolet (right). Credit: Wikipedia There are three ways to look for evidence of alien technological civilizations. One is to look out for deliberate attempts by ...

In the classic 1937 sci-fi novel "Star Maker," author Olaf Stapledon imagined a massive machine that could encompass an entire star, capturing its energy and harnessing it to provide near unlimited ...