Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures?

A team of astronomers combed through a collection of odd stars that are candidates for Dyson spheres — artificial constructs designed by aliens to leech energy from stars. Instead, the scientists ...

When sonar first picked up a massive, stair‑like object on the floor of the Baltic Sea, the image looked less like geology and more like a movie prop. The structure’s circular outline, sharp edges and ...

Scientists believe they have finally established the truth behind one of the world’s greatest deep sea mysteries. Back in 2011, Swedish explorers Peter Lindberg and Denis Asberg were combing the ...

The ‘Gardens by the Bay’ are home to 100,000 thriving plants–but for the entire setup to work, the designers had to figure out a way to protect the eerily-designed structures against the strong winds ...

Add Yahoo as a preferred source to see more of our stories on Google. A NASA satellite image of the sky, with a hot, dusty galaxy circled in magenta. A team of astronomers combed through a collection ...