9 Lives

Scientists suggest that the vibrations help cats keep their bones healthy and strong, preventing them from becoming brittle while they spend most of their time sleeping and lazing around. The specific frequency of those vibrations are claimed to have healing properties for injured body tissues and are now being applied as adjunct therapies in rehabilitation medicine.

Maybe purring is the reason why cats are said to have 9 lives.

3. The “Space Roar”

While observing the cosmos in 2006, astronomers were able to hear sounds that seemed to mimmick “roars” in space. Knowing full well that space is an immense vacuum where sound is incapable of travelling, these experts were at odds as to what they could possibly be.