Beneath Antarctica's vast ice sheets exists a hidden continent of towering mountains, gaping valleys, and stretching plains that scientists are only beginning to understand. In the latest breakthrough ...

Buried way underneath Antarctica’s ice, researchers have found an enormous, continent-sized network of basins we never knew ...

Artist's illustration showing a star behind a shattered comet. A faraway star's mysterous dimming was most likely caused by comets, a new study suggests — though it doesn't rule out the ...

Let's just call it the alien megastructure that wasn't. More than 100 researchers have released a study showing that the mysterious star KIC 8462852, better known as Tabby's Star, is almost certainly ...

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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 ...

(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 ...

The mystery of why a distant star keeps dimming continues to baffle scientists, after a new report ruled out several "natural" explanations. The astronomical world lit up last year, after planet ...

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 ...

Over the past weekend astronomers were rushing to fix their telescopes on the mysterious star which spawned the theory because it was, once again, acting strangely. Known as Tabby’s Star, or KIC ...