Elon Musk's proposed Terafab in Grimes County, Texas, could surpass Boeing's Everett factory, the world's largest building by ...

(To get an idea of how big that is, about the 455 United States, lengthwise, could fit inside this alien megastructure.) Any structure built around this star would have to be quite large to block the ...

Has an advanced alien civilization built a mind-boggling megastructure around the distant star KIC 8462852? It’s extremely unlikely, but astronomers promised to get to the bottom of the cosmic mystery ...

Add Yahoo as a preferred source to see more of our stories on Google. Archaeologists in Romania have uncovered portions of an ancient megastructure from around 6,200 years ago. The oak-floor building ...

The Boeing Everett Factory in Washington is the world's largest building by volume, but it could soon be dwarfed by SpaceX ...