Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

For decades, the search for life beyond Earth has focused on distant exoplanets and the rusty plains of Mars. Now, a small icy world in orbit around Saturn is emerging as one of the most compelling ...

According to popular media, the search for alien life involves advanced technology, space exploration and sometimes even government conspiracies and secret programs. But according to University of ...

An international research team led by the University of Vienna has produced, for the first time, high-resolution global maps of invasion risk for thousands of alien plant species under current ...

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.