Thus, the Tycho impactor, probably 8 to 10 km wide, came in low over the Moon's western horizon. On Earth, 109 million years ago, dinosaurs and other reptiles must have witnessed this devastating collision and perhaps suffered a few days later when fist-sized pieces of Tycho ejecta hit the Earth.
Tinnitus can be experienced in both ears as well as in a single ear or inside the head. Because of the continuous ringing in the ears, tinnitus is also known to cause several psychological side effects.
Finally, any condition or symptom for which there is currently no effective treatment provides a market ripe for exploitation. Tinnitus has many of these features. Tinnitus describes the subjective experience of spontaneous noise perceived in one or both ears, which can be a buzzing, hiss, tone, or ringing sound.