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Japan goes fishing for space junk but 700-metre ‘tether’ fails | Space

An experimental Japanese mission to clear space junk from the Earth’s orbit has ended in failure, officials said on Monday, in an embarrassment for Tokyo.

More than 100m pieces of rubbish are thought to be whizzing around the planet, including cast-off equipment from old satellites and bits of rocket, which experts say could pose risks for future space exploration.

Scientists at the Japan Aerospace Exploration Agency (Jaxa) were trying to test an electrodynamic “tether” – created with the help of a fishing net company – to slow the orbiting rubbish and bring it into a lower orbit.

The hope was that the clutter – built up after more than five decades of human space exploration – would eventually enter the Earth’s atmosphere and burn up harmlessly before it had a chance to crash into the planet.

The 700-metre tether – made from thin wires of stainless steel and aluminum – was due to be extended from a cargo ship launched in December carrying supplies to astronauts at the International Space Station.

Problems arose quickly, however, and technicians tried for days to fix the problem but had only one week to carry out the mission before the vessel reentered the Earth’s atmosphere before dawn on Monday.

“We believe the tether did not get released,” leading researcher Koichi Inoue said. “It is certainly disappointing that we ended the mission without completing one of the main objectives.”

The disappointment is the latest failure to hit Jaxa and comes just weeks after the agency had to abort a mission that sought to use a mini-rocket to send a satellite into orbit.

The agency also abandoned a satellite launched in February last year to search for X-rays emanating from black holes and galaxy clusters after losing contact with the spacecraft.

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