Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also could have brought alien life to our planet. What evidence of this planet still exists on Earth today?

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

Asked when they humans will likely have contact with extraterrestrials, an eye-popping 21% said, “We already have,” according to the poll.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist having a Eureka moment, realising in a single dramatic instant that Earth is being visited by creatures from light-years away.

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Explore why Alien: Earth Season 2’s greatest threat may be humanity itself, as the series shifts focus from Xenomorph horror to deeper conflicts, survival, and the franchise’s most dangerous monster yet.