Scientists are baffled when a seemingly huge tsunami headed straight for Hong Kong suddenly disappears in the water.
Sandy Island seems to have disappeared, and scientists aren't quite sure why. Was there some sort of elaborate government experiment?
Satellite images capture a distinct glowing object beneath the ocean's surface.
An Italian astronaut aboard the International Space Station spotted these strange lights in the middle of the ocean. What could they be?
Some of these scratches are 10 or more meters long.
Even stranger, it disappeared less than a year later.
If it’s not a rock or an island, what is it?