Could alien signals have already reached Earth undetected? - If advanced alien civilisations exist and have contacted Earth, they are more likely rare, scientists say

Scientists continue to look for signs of alien life on Mars, but this scientist truly popularized the idea, claiming to find canals on the Red Planet's surface.

'Alien: Earth' creator has no plans for a 'Predator' crossover on the Hulu series. 20th Century Studios/Courtesy Everett Collection/Kurt Iswarienko/FX Although Predator recently ventured back into the world of Alien, it does not appear the crossover will ...