Harvard's Avi Loeb warns interstellar comet 3I/ATLAS could be alien tech. Experts weigh in on planetary defence and the risks ...

3I/ATLAS came within 168 million miles of Earth around midnight CST Friday. While that might seem pretty far away, the ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

Nasa’s mission teams use extreme environments to trial equipment and procedures for future lunar and planetary exploration.

While the 21st century has been bumpy, it has also ushered in monumental scientific and technological breakthroughs that have ...

For decades, Uranus and Neptune have been filed neatly into the “ice giant” drawer, shorthand for worlds built mostly from ...

While you wait for CBS' Tracker to return from its midseason hiatus, here are 15 similar shows worth checking out.

As a Princeton student with no car and a Pavlovian aversion to the library, I often find myself spending weekends at the ...

In the summer of 1977, while most people were listening to disco and trying to figure out Star Wars, NASA launched two small spacecraft called Voyager 1 and Voyager 2. They were simple-looking robots ...

With Justice League #3 by Scott Snyder, fans were introduced to something far more chilling and mysterious—the Invisible ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

“All in all, the undisputed factual record indicates that the United States and El Salvador have behaved as principal and ...