Mystery object’s breakup caught on video

Scientists flying on an instrument-laden jet captured great video views of a mysterious space object known as WT1190F as it streaked through the air and burned up over the Indian Ocean today.

The pictures were put on the Web just hours after the object, which is thought to have been debris from a rocket or spacecraft, re-entered Earth’s atmosphere at 06:18 GMT Friday (10:18 p.m. PT Thursday).

WT1190F was discovered by astronomers with the Catalina Sky Survey just last month, but an analysis of archived telescope data revealed that the object had been tracing a highly elliptical Earth orbit for years, ranging up to twice as far away as the moon.

The analysis also showed that the object was relatively lightweight, and measured about 6 feet (2 meters) in length. That’s what led experts on orbital debris to conclude that it was a piece of space junk.

There are thousands of bits of space junk orbiting our planet, but what’s remarkable about WT1190F is that its atmospheric re-entry could be calculated so precisely in advance. The pictures and data captured from a Gulfstream jet flying out of Abu Dhabi provides the evidence that scientists nailed it.

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By Alan Boyle

Mastermind of Cosmic Log, contributor to GeekWire and Universe Today, author of "The Case for Pluto: How a Little Planet Made a Big Difference," past president of the Council for the Advancement of Science Writing.

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