Astronomers have identified seven star systems in our galaxy that could potentially host a Dyson sphere — a hypothetical megastructure an alien civilization could build around a star or black hole to ...

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 ...

Throughout the 1960s and ’70s, starry-eyed architects set their minds to megastructures – massive, multi-purpose designs that could house communities or even entire cities. Complex and expensive to ...

The truth is out there — or at least that’s what researchers at NASA and the Search for Extraterrestrial Intelligence (SETI) Institute are hoping. While much of the SETI Institute's research involves ...

A story that went viral this week reports that astronomers finally found E.T., but those aren't the facts. CNET's Eric Mack talks with the astronomers involved about what is still a very interesting ...

A full series of History Hit YouTube exclusive videos on the most fascinating megastructures of the Second World War. Join presenters Dan Snow and James Rogers as they travel across Europe to discover ...