June 2015

InSight prepares for Mars mission

Testing is underway on NASA's next mission on the journey to Mars, a stationary lander scheduled to launch in March 2016.

The lander is called InSight, an abbreviation for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport. It is about the size of a car and will be the first mission devoted to understanding the interior structure of the Red Planet. Examining the planet's deep interior could reveal clues about how all rocky planets, including Earth, formed and evolved.

The current testing will help ensure InSight can operate in and survive deep space travel and the harsh conditions of the Martian surface. The spacecraft will lift off from Vandenberg Air Force Base in California, and land on Mars about six months later.

The technical capabilities and knowledge gained from Insight, and other Mars missions, are crucial to NASA's journey to Mars, which includes sending astronauts to the Red Planet in the 2030s.

During the environmental testing phase, the lander will be exposed to extreme temperatures, vacuum conditions of nearly zero air pressure simulating interplanetary space, and a battery of other tests over the next seven months. The first will be a thermal vacuum test in the spacecraft's "cruise" configuration, which will be used during its seven-month journey to Mars. In the cruise configuration, the lander is stowed inside an aeroshell capsule and the spacecraft's cruise stage - for power, communications, course corrections and other functions on the way to Mars - is fastened to the capsule.

Other tests include vibrations simulating launch and checking for electronic interference between different parts of the spacecraft. The testing phase concludes with a second thermal vacuum test in which the spacecraft is exposed to the temperatures and atmospheric pressures it will experience as it operates on the Martian surface.

(Source: Excerpt from a NASA news release)

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