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Rhenn is a Manila-based content writer with a love for all things geek and pop culture, and science and technology. He has over 1,900 articles to his name, most of which exploring the many dimensions ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. What would be the ...

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

Dyson spheres, the hypothetical mega-structures that advanced alien civilizations might use to enclose a star and harness its energy, suffer from a fatal flaw: They are catastrophically unstable. But ...