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

Alien spaceships are in a league of their own, though. Earth does have a force field that could make a spacecraft landing ...

American space agency NASA said the Perseverance rover is good to go on Mars until at least 2031, both hardware and software ...

From budgetary issues to wanting to recast Sigourney Weaver as Ellen Ripley, James Cameron’s version of Aliens almost never ...

Harvard physicist Avi Loeb challenges NASA, suggesting the iron-rich composition of interstellar object 3I/ATLAS indicates ...