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→top: Spelling/Grammar Check, typos fixed: celsius → Celsius
'''Supersonic''' is a term used to describe things which fly faster than the [[speed of sound]]. At 70 degrees Fahrenheit (21 celsius), for an object to fly faster than sound, it must travel 761 miles per hour (1224.71 kilometers per hour).
'''Supersonic''' is a term used to describe things which fly faster than the [[speed of sound]]. At 70 degrees Fahrenheit (21 Celsius), for an object to fly faster than sound, it must travel 761 miles per hour (1224.71 kilometers per hour).
American [[P-47 Thunderbolt]]s in World War II came close to supersonic speeds in a dive, but the first person to break the sound barrier in level flight was [[Charles Yeager|"Chuck" Yeager]] in the [[X-1]] experimental aircraft.
American [[P-47 Thunderbolt]]s in World War II came close to supersonic speeds in a dive, but the first person to break the sound barrier in level flight was [[Charles Yeager|"Chuck" Yeager]] in the [[X-1]] experimental aircraft.
[[Category: Science]]
[[Category:Science]]