Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an exceedingly rare discovery: a mysterious object passing through the solar ...

Claims that the Nazca mummies represent a new alien species originate from a self-published paper by a retired paleontologist. A detailed peer review challenges these conclusions, identifying the ...

A strange metallic monolith was discovered deep in the Utah desert, and very few people knew where it was. Using flight data, terrain clues, and instinct, the location was quietly tracked down. The ...