There's a compelling explanation for why we've never found aliens — and it could mean humanity is doomed
• An important existential question about human survival is also relevant to the search for alien life: Is it possible for a civilization to survive long enough to explore the stars?• A new paper suggests
For Alyssa Carson, colonizing Mars is just the first step in saving the human race. The 18-year-old astrobiology student at Florida Tech remembers when she was nine years old, she had the opportunity meet
When the Viking landers touched down on the Martian surface at the height of the Watergate scandal, they kicked up two clouds of rusty soil and a debate that would continue for more than four decades.