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Russian space probe fall into Pacific Ocean

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A Russian space probe designed to boost the nation's pride on a bold mission to a moon of Mars came down in flames Sunday, showering fragments into the south Pacific west of Chile's coast, officials said.
Pieces from the Phobos-Ground, which had become stuck in Earth's orbit, landed in water 775 miles west of Wellington Island in Chile's south, the Russian military Air and Space Defense Forces said in a statement carried by the country's news agencies.

The military space tracking facilities were monitoring the probe's crash, its spokesman Col. Alexei Zolotukhin said. Zolotukhin said the deserted ocean area is where Russia guides its discarded space cargo ships serving the International Space Station.

RIA Novosti news agency, however, cited Russian ballistic experts who said the fragments fell over a broader patch of Earth's surface, spreading from the Atlantic and including the territory of Brazil. It said the midpoint of the crash zone was located in the Brazilian state of Goias.

The $170 million craft was one of the heaviest and most toxic pieces of space junk ever to crash to Earth, but space officials and experts said the risks posed by its crash were minimal because the toxic rocket fuel on board and most of the craft's structure would burn up in the atmosphere high above the ground anyway.
The Phobos-Ground was designed to travel to one of Mars' twin moons, Phobos, land on it, collect soil samples and fly them back to Earth in 2014 in one of the most daunting interplanetary missions ever. It got stranded in Earth's orbit after its Nov. 9 launch, and efforts by Russian and European Space Agency experts to bring it back to life failed.

Roscosmos said that all of the fuel will burn up on re-entry, a forecast Klinkrad said was supported by calculations done by NASA and the ESA. He said the craft's tanks are made of aluminum alloy that has a very low melting temperature, and they will burst at an altitude of more than 60 miles.

The space era has seen far larger spacecraft crash. NASA's Skylab space station that went down in 1979 weighed 85 tons and Russia's Mir space station that de-orbited in 2001 weighed about 143 tons. Their descent fueled fears around the world, but the wreckage of both fell far away from populated areas.
The Phobos-Ground was Russia's most expensive and the most ambitious space mission since Soviet times. Its mission to the crater-dented, potato-shaped Martian moon was to give scientists precious materials that could shed more light on the genesis of the solar system.

The Phobos-Ground also contained a tiny quantity of the radioactive metal Cobalt-57 in one of its instruments, but Roscosmos said it poses no threat of radioactive contamination.
The spacecraft also carried a small cylinder with a collection of microbes as part of an experiment by the Pasadena, California-based Planetary Society that designed to explore whether they can survive interplanetary travel. The cylinder is attached to a capsule that was supposed to deliver Phobos ground samples back to Earth.
Igor Marinin, the editor of Russia's Novosti Kosmonavtiki magazine, said on Russia's NTV television that it would likely be destroyed.

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