Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

Ever so slightly bigger than Earth, the exoplanet LHS 3844b orbits its parent star, LHS 3844, a red dwarf 48.5 light-years ...

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is ...

Thomas Mulligan investigates the sophisticated methods and cutting-edge technology researchers employ to uncover evidence of ...

A planet with one side permanently roasting and the other frozen in endless darkness might still have a chance of supporting life. Researchers found that heat inside a tidally locked exoplanet could ...

Deep beneath the oceans' crashing waves lies a hidden landscape more alien than many of us could ever dream. Below the ...

Nasa’s Habitable Worlds Observatory, launching in the 2040s, will depend on robotic spacecraft for maintenance and upgrades due to its distant location near Lagrange Point 2.

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

Count Binface describes himself as ‘an intergalactic space warrior and leader of the Recyclons from planet Sigma IX’. But the ...

NASA's proposed Habitable Worlds Observatory will be designed for robotic repairs instead of astronaut servicing. The ...

Star Trek's Prime Directive revolutionized the science fiction genre by promoting cooperation and non-interference with alien ...

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