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Lost Mars Probe Briefly Phones Home, But the Window to Save the Phobos-Grunt Mission is Closing


Finally, Russia’s Phobos-Grunt spacecraft has called home. The European Space Agency has confirmed that Roscosmos’ marooned spacecraft--stuck in Earth orbit after a failed booster firing failed to set it on a course for Mars earlier this month--made contact with an ESA tracking station in Perth, Australia, yesterday. But no telemetry data was exchanged in the brief contact, and the prospects for the mission are still next to hopeless.

A quick primer: Phobos-Grunt launched on November 8 from Kazakhstan’s Baikonur Cosmodrome and found Earth orbit as intended. But two booster firings were supposed to send the 29,000-pound spacecraft on a course for Mars, where it would drop off a Chinese orbiter at the Red Planet before finding its way to Mars’ moon Phobos. Neither firing happened, and the window to correct the problem and recover the mission is swiftly closing.
Yesterday’s contact marks the first exchange of signals with Phobos-Grunt since that November 8 launch. And, as luck would have it, yesterday’s contact was made during the ESA’s final attempt to contact Phobos-Grunt before giving up. Now, the Perth station’s 49-foot antenna will attempt to establish communication a second time tonight.

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