It was later revealed that The Old Man, one of the wielders of the immensely powerful cosmic artifact known as the Star Brand, had attempted to rid himself of his unwanted power by transferring the Star Brand onto an asteroid near Earth. However, the Brand required a living being's will in order to control it, and when placed in an inanimate object, a flood of power was released, infusing many human beings with a fraction of the Star Brand's energies. A similar accident called the Black Event would occur on December 19, 1988 when Star Brand wielder Ken Connell tried to get rid of the Brand by placing it onto a free weight, resulting in a massive blast of energy which totally destroys the city of Pittsburgh.
Another such event, the Fireworks, took place on April 26th 1953 at 9:00 EST. The Fireworks created three known superhumans, all North American. It appears that none of the them possessed the power of the Star Brand. All three superhumans were killed in 1959 by agents of the US government's Project Spitfire.
Project Spitfire believes that a third event took place in 1888, but only created a single superhuman, who later died in World War One. No further details about this event have been revealed.