Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

Each question in the ABC 50/50 quiz has only two options: one is right; the other is wrong. But there's a catch.

Take a drive to the CIA’s Area 51 – a route with more UFO sightings and unexplained mysteries than anywhere else on Earth ...

Steven Spielberg’s credulity makes his latest alien contact film, Disclosure Day, mawkish and old-fashioned rather than ...

Baba Vanga's alleged 2026 predictions, including a US-Iran war, lack verifiable evidence. Her name is often misused to fit ...

The makers of the blockbusting sci-fi thriller reveal how they made a hit, why Kevin Spacey was almost involved and what went wrong with the sequel ...

Teetering near endangered status, the starlet sea anemone produces “an ancient mechanism” for fighting viruses that ...

Australia's space agency said there's a completely rational, albeit cosmic, explanation behind the mysterious orbs that ...

Does anywhere in the country better represent this era of the American experiment than a self-governing tech-company town ...

NASA’s Viking 1 lander set down in the Chryse Planitia region of Mars. Its identical twin, Viking 2, followed on Sept. 3 of ...

A commercial truck driver from Massachusetts being held on $700,000 bail after allegedly killing a Pennsylvania state trooper in a fiery crash with another tractor-trailer Wednesday morning is an ...