Military movies frequently depict soldiers communicating with a flurry of hand signals, but what exactly do those signals ...

It's also a harbinger of future claims about possible signs of life beyond our solar ... and I don't think we're there yet." The planet in question, K2-18b, was discovered in 2015 by NASA's ...

It's also a harbinger of future claims about possible signs of ... were right to report it, he also thinks it would not be surprising "if the signal went away" when other groups reanalyzed the data.