The afternoon of 7 August 1996 isn’t a time that sticks in many people’s minds. But if things had worked out differently, it might have been etched into our collective memory. At 1.15pm, US President ...

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 ...

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 ...

A mysterious metal shard captured the imagination of the American public, because it was supposedly from a 1947 UFO that crashed on Earth. The sample seemed to have an unprecedented material structure ...