I made a tier list of opm characters' speed/agility. (1 speed of sound = 1 Mach, 874030 Mach = 1 speed of light) : r/OnePunchMan
Mach Number
Supersonic speed - Wikipedia
RELATIVITY IN EVERY INERITAL REFERENCE FRAME, THE SPEED OF LIGHT IS A CONSTANT BUT WHAT DOES THIS MEAN? - ppt download
What is the Mach equivalent of the speed of light? - Quora
What is Mach 2 and is it faster than the speed of sound? - Quora
internal consistency - If you're moving at a speed exponentially faster than the speed of light, can you still see each other? - Worldbuilding Stack Exchange
NASA's X-43A Scramjet Achieves Record-Breaking Mach 10 Speed Using Model-Based Design - MATLAB & Simulink
Hermeus Fully-Funded to Flight with $60 Million U.S. Air Force Partnership
The Red Warning Light on Richard Branson's Virgin Galactic Space Flight | The New Yorker
Top Gun: Maverick's Mach 10 Darkstar Is a Sign of Military Aircraft to Come - autoevolution
Virgin Galactic reveals high-speed Mach 3 aircraft design
The X-15, the fastest plane ever built, would be launched off a bomber and light its rocket engines to reach 350,000 feet and a top speed of Mach 6.7 (4500 mph). : r/Damnthatsinteresting
Military's hypersonic rocket plane to fly Mach 20 by 2016
How Fast Does Light Travel? | The Speed of Light | Space
Solved Speed of sound: the speed of sound in dry air is 344 | Chegg.com
X-15 Walkaround | Air & Space Magazine| Smithsonian Magazine
United plans supersonic passenger flights by 2029 - BBC News
Top Gun Maverick's Darkstar - HOW TO REACH MACH 10 - Microsoft Flight Simulator - YouTube
How Fast is Mach One? - Universe Today
Speed of light - Wikipedia
Superfast Military Aircraft Hit Mach 20 Before Ocean Crash | Space
