Something in the deep made a sound that echoed through the Pacific. It took 8 years to find the source.

In 1997, NOAA researchers recorded a mysterious ultra-low-frequency noise so powerful it registered on sensors thousands of miles apart.
EcoPortal.net

NOAA scientists chased a mystery sound loud enough to cross the entire Pacific Ocean and found something far stranger than a sea monster

Scientists recorded a mysterious sound that crossed the Pacific Ocean. Here’s what this ocean signal really was and how it was finally fully explained.
Yahoo

NASA's InSight lander captured the 'bloop' sound of a meteor falling to Mars

Add Yahoo as a preferred source to see more of our stories on Google. NASA shared the sound of a meteor falling to Mars, with photos of the impact craters, on Monday. The dwindling InSight lander has ...