The rule changes come amid an explosion of trading in the options market--and allegations of insider trading using options in advance of major corporate announcements.

FORBES: Option Markets Make A Racket

If true, that would rule out an in-flight explosion as the cause of the crash of Air France Flight 447, Defense Minister Nelson Jobim told reporters.

CNN: Brazilian air force says debris was not from Air France crash

"We're certainly not at 90% compliance with the 25-year rule yet, and we see explosion events on average about three times a year, " explained Dr Hugh Lewis, who detailed the research findings at the 6th European Conference on Space Debris in Darmstadt, Germany, on Monday.

BBC: Space debris collisions expected to rise