Canadian researcher uncovers Bering Sea airburst, the third-largest object to hit Earth GlobeTechnology
The small orange streak in this image from a Japanese weather satellite marks the track of a massive fireball over the Bering Sea last December 18. The image was posted on Monday by Simon Proud, an atmospheric researcher at Oxford University after scientists were alerted to the fireball’s occurrence through archived low frequency sound recordings.
“It’s likely that there were very strong shock waves that reached the surface,” said Dr. Brown. He noted that had the object’s orbit intersected with Earth just four hours earlier, it would have exploded over Fort McMurray, Alta., where the force of the high-altitude blast would have been sufficient to shatter windows.
All of this puts last December’s event – now dubbed the Bering Sea airburst – in context as the third-largest in recorded history. Based on estimates of the solar system’s population of asteroids, such an event is expected, on average, about once per decade. “Even if it were a larger object we still would not have seen it in the daytime sky,” Dr. Johnson said.
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