NASA's hunt for alien life may be undermined by its own instruments, according to a group of leading astrobiologists who warn that current tools and mission designs are likely missing subtle, but ...

Astrophysicist and science communicator Neil deGrasse Tyson spills on his obsession with aliens and the best and worst ...

America's vast national parks have long been sold as places of beauty, solitude and adventure. But for some UFO researchers, ...