NASA To Delay Mars Insight Mission, Will Launch In 2018

First Posted: Sep 05, 2016 05:06 AM EDT
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NASA's first mission dedicated to investigate the deep interior of Mars, "The InSight mission" has now been moved to a Launch Date of May 5, 2018. The Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) mission was originally scheduled to launch in March of this year, but NASA suspended launch preparations in December due to a vacuum leak in its prime science instrument, the Seismic Experiment for Interior Structure (SEIS).

The new launch period for the mission begins May 5, 2018, with a Mars landing scheduled for Nov. 26, 2018. The next launch opportunity is driven by orbital dynamics, so 2018 is the soonest the lander can be on its way.

"Our robotic scientific explorers such as InSight are paving the way toward an ambitious journey to send humans to the Red Planet," said Geoff Yoder, acting associate administrator for NASA's Science Mission Directorate, in Washington. "It's gratifying that we are moving forward with this important mission to help us better understand the origins of Mars and all the rocky planets, including Earth."

Why the delay?

InSight's primary aim is to help us understand how rocky planets formed and evolved, states the official website. The delay in launch was caused by a problem with one of the probe's instruments, the Seismic Experiment for Interior Structure (SEIS), which will measure very small seismic activity on Mars, according to Jet Propulsion Lab's report.

The instrument "requires a perfect vacuum seal around its three main sensors in order to withstand harsh conditions on the Red Planet," according to the statement, but inspections done ahead of the initial launch date found leaks in the vacuum chamber.

Mission Replan

Under what's known as the mission "Replan," CNES will now focus on developing and delivering the key sensors for SEIS, integration of the sensors into the container, and the final integration of the instrument onto the spacecraft. NASA's Jet Propulsion Laboratory will be responsible for redesigning, developing and qualifying the instrument's evacuated container.The German Aerospace Center (DLR) is contributing the Heat Flow and Physical Properties Package (HP3) to InSight's science payload.

NASA's budget for InSight was $675 million. The instrument redesign and two-year delay add $153.8 million. The additional cost will not delay or cancel any current missions, though there may be fewer opportunities for new missions in future years, from fiscal years 2017-2020.

"We've concluded that a replanned InSight mission for launch in 2018 is the best approach to fulfill these long-sought, high-priority science objectives," Jim Green, director of NASA's Planetary Science Division, said in the statement.

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