What on Earth is That?
After going on hiatus for a few months, What on Earth is That is back! We’re don’t plan to post a new question every week, but we will when we have something interesting. Here’s the latest mystery sound. Know what it is? Hint: It has something to do with NASA and Earth science.
(Post your guesses in the comments section, and check back next week for the answer….)
Here’s the question from last time