Meet the giant phantom jellyfish. It's over a metre (3ft) wide and has four ribbony arms that trail behind for up to 10 ...

Mysterious red lights falling from space, initially thought to be alien signals, have been identified by scientists as red sprites. These rare upper-atmosphere lightning phenomena occur high above ...

When a thunderstorm recently lit up the night sky, cameras captured towering red shapes that looked uncannily like glowing jellyfish hanging above the clouds. The images raced across social media, and ...