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?

American Religious Belief in Extraterrestrial Life (Princeton Univ., Sept.) argues that several American religious traditions have long believed in that aliens exist—and want to help us.

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

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

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

New SETI protocols outline how scientists should verify, share, and respond to potential evidence of alien intelligence in the modern information age.

As its name suggests, Alien: Earth imagines what would happen if the Xenomorph wound up on our planet. Here, it arrives as part of the cargo of the USCSS Maginot, a Weyland-Yutani research vessel that crash lands in New Siam, Prodigy City, named after Weyland-Yutani rival Prodigy Corporation.

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