It’s hard for us to assert.” Bill Diamond, president and chief executive of SETI, told “Jesse Weber Live” on Friday.

But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” who look suspiciously like us in rubber suits. The scientists who actually ...