North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the US. State media on Saturday ...

They further believe that when the megastructure was constructed the ... for instance in connection with submarine cable laying or stone harvesting is not very likely. The methodical arrangement ...

The mystery of the "alien megastructure" star may finally be settled. In 2015, a rumor spread about the star KIC 8462852. It was proposed that the star might harbor an alien race. The rumor ...