NASA has called off its next Mars mission because of a leak in a science instrument.
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“We just have run out of time”, John M. Grunsfeld, the associate administrator for NASA’s science directorate, said during a telephone news conference.
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NASA and CNES also are participating in the European Space Agency’s (ESA’s) Mars Express mission now operating at Mars and plans to participate on ESA’s 2016 and 2018 ExoMars missions, including providing telecommunication radios for ESA’s 2016 orbiter and a critical element of a key astrobiology instrument on the 2018 ExoMars rover. “In some sense, we don’t have a decision to make, because we’re not ready to go”, he said.
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The Seismic Experiment for Interior Structure (SEIS) is one of InSight’s most important instruments.
SEIS needs a vacuum environment for making its ultraprecise measurements.
Earlier this month, it was discovered that there was a leak in the vacuum-sealed sphere that holds three seismometers. “That is a question that’s on the table”, Grunsfeld said, stressing that he could not answer questions definitively, because engineers were only beginning to consider the new leak problem.
So far, the USA space agency has spent $525 million on the program, including buying an Atlas 5 rocket from United Launch Alliance, a partnership of Lockheed Martin (LMT.N) and Boeing (BA.N). The officials determined that the time is limited to fix such a leak. That work will begin soon, and will likely take a while, Grunsfeld said.
A problem with the seismometer triggered cancellation of the launch, the agency said in a statement on Tuesday.
InSight, whose name is short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport, was created to help scientists better understand Mars’ interior structure – knowledge that, in turn, should shed light on the formation and evolution of rocky planets in general.
The seismometer, which measures about eight or nine inches in diameter, is sensitive enough to measure vibrations so slight, they are “at the level of the size of an atom”, Bruce Banerdt, principal investigator of the InSight project at the Jet Propulsion Laboratory. It was supposed to ship to the Southern California launch site next month.
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If InSight survives its pending review, it will be the agency’s first interplanetary mission to lift off from Vandenberg; such missions normally launch from Cape Canaveral Air Force Station in Florida.
