299,792,458 Meters per Second

 is an Earth Badge. To earn this badge, users have to quickly and correctly submit 75 consecutive answers in any arbitrary exercise. Just a slow or incorrect answer and users have to start all over again.

Similar badge(s)

 * Picking Up Steam
 * Going Transonic
 * Going Supersonic
 * Sub-light Speed

Trivia

 * Before Spring 2011, 299,792,458 Meters per Second was a Sun Badge. As more exercises came along, the badge got changed into an Earth Badge.