In the early 2000s, Gary McKinnon breached US military and NASA networks in what prosecutors called “the biggest military computer hack of all time.” He says he stumbled onto evidence of a hidden ...

Add Yahoo as a preferred source to see more of our stories on Google. A comet that is likely much, much older than our solar system has spent months traipsing through Earth's cosmic neighborhood. And ...

NASA on Wednesday released new images and data of Comet 3I/ATLAS, the rare interstellar object that set off weeks of speculation — and a full-blown online debate — over whether it could be an alien ...

For the third time in history, NASA has observed an interstellar traveler passing through our solar system. Multiple US and international observatories captured Comet 3IATLAS since its July 1 ...

A comet that is likely much, much older than our solar system has spent months traipsing through Earth's cosmic neighborhood. And at long last, NASA has unveiled an unprecedented look at the object, ...