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Russians desperately try to save Mars moon probe
Question of the Day
MOSCOW (AP) — A Russian space probe became stuck in orbit Wednesday after an equipment failure, raising fears it could come crashing down and spill tons of highly toxic fuel on Earth unless engineers can steer it back to its flight path.
One U.S. expert said the spacecraft could become the most dangerous manmade object ever to hit the planet. The mishap was the latest in a series of recent Russian failures that have raised concerns about the condition of the country’s space industries.
The unmanned $170 million Phobos-Ground craft was successfully launched by a Zenit-2 booster rocket just after midnight Moscow time Wednesday (3:16 p.m. EST Tuesday) from the Baikonur cosmodrome in Kazakhstan. It separated from the booster about 11 minutes later and was supposed to fire its engines twice to set out on its path toward Mars, but never did. The craft was aiming to get ground samples from Phobos, one of Mars’ two moons.
Federal Space Agency chief Vladimir Popovkin said neither of the two engine burns worked, probably because the craft’s orientation system failed. He said engineers have three days to reset and fix the spacecraft’s computer program before its batteries die — but the space agency later said the probe’s orbit and its power sources could allow it to circle the Earth for about two weeks.
Russia news agencies cited space experts who offered widely varying estimates of how long the craft could stay in orbit before crashing down — from five days to one month.
“This is not an impossible challenge,” Mr. Oberg said in an email to the Associated Press. “Nothing irreversibly bad has happened, the full propellant load is still available, and short-term ‘stay healthy’ maneuvers can be performed,” such as deploying the craft’s solar panels to boost its power.
He warned, however, that if controllers fail to bring the Phobos-Ground back to life, the tons of highly toxic fuel it carries would turn it into the most dangerous spacecraft ever to fall from orbit.
“About seven tons of nitrogen teroxide and hydrazine, which could freeze before ultimately entering, will make it the most toxic falling satellite ever,” he said. “What was billed as the heaviest interplanetary probe ever may become one of the heaviest space derelicts to ever fall back to Earth out of control.”
Mr. Oberg said such a crash could cause significantly more damage than the Russian Mars-96 that crashed in the Andes Mountains or the American USA 193 spy satellite that was shot down by a U.S. Navy missile in 2008 to prevent it from splashing its toxic fuel.
The Russian rescue effort Wednesday was being hampered by a limited earth-to-space communications network that already had forced flight controllers to ask people in South America to help find the spacecraft. Amateur astronomers were the first to spot the trouble when they detected the craft was stuck in an Earth orbit.
The Phobos-Ground was Russia’s first interplanetary mission since a botched 1996 robotic mission to Mars, which failed when the probe crashed shortly after the launch because of an engine failure.
The spacecraft is 13.2 metric tons (14.6 tons), with fuel accounting for a large share of its weight. It was manufactured by the Moscow-based NPO Lavochkin, which specializes in interplanetary vehicles.
The company also designed the craft for Russia’s botched 1996 launch and the two probes sent to Phobos in 1988, which also failed. One was lost a few months after the launch because of an operator’s mistake, and contact was lost with its twin when it was orbiting Mars.
The Russian space agency responded to the failures by promising to establish its own quality-inspection teams at rocket factories to tighten oversight over production quality.
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