Remember the WOW signal from 1977? A 72-second narrowband radio signal detected by Ohio State University's Big Ear radio telescope created a significant buzz. But then, everything went silent. For ...

If an alien megastructure indeed encircles a star known as KIC 8462852, it's 1,500 years old and no one may be home anymore. Q: What’s the deal with that star that was giving off weird light signals?

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 ...