These objects appear following a thunderstorm, and the story behind them is fascinating.
In 2017 a vast chasm the size of Maine opened up in Antarctica, leaving scientists totally baffled.
A seemingly primitive medieval remedy may hold the key to overcoming a huge threat to humanity today.
The SpaceX Dragon spacecraft made history, but surprising dangers threatened its return to Earth.
The unusual appearance of our Moon’s dark side has long puzzled scientists – until now.