IFLScience
shared a link post in group #IFLScience
www.iflscience.com
What Is Mach 1 and Why Does It Matter?
The speed of sound is not a fundamental barrier like the speed of light, but it’s not irrelevant either.
Comment here to discuss with all recipients or tap a user's profile image to discuss privately.
Embed post to a webpage :
<div data-postid="nbbazpd" [...] </div>