NASA InSight lander heads for "7 minutes of terror"

 NASA's InSight lander will be descending 80 miles through the Martian atmosphere in a few hours.

Having traveled more than 89 million miles since its launch from Vandenberg Air Force Base back in May, the ambitious spacecraft is currently on track to reach Mars on November 26th.

Just like the previous surface missions, InSight must survive the '7 minutes of terror' - the time it takes for a probe entering Mars' thin atmosphere at hypersonic speed to slow to walking pace and gently put itself on the ground.

"Landing on Mars is hard. It takes skill, focus and years of preparation," said Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate.

"Keeping in mind our ambitious goal to eventually send humans to the surface of the Moon and then Mars, I know that our incredible science and engineering team - the only in the world to have successfully landed spacecraft on the Martian surface - will do everything they can to successfully land InSight on the Red Planet."

If InSight survives the descent, the $1 billion lander will attempt to learn more about what lies beneath the surface of the Red Planet using an array of sensitive instruments including a burrowing temperature sensor and a seismometer designed to detect Marsquakes. Its mission is to determine the red planet's internal structure.

"This mission will probe the interior of another terrestrial planet, giving us an idea of the size of the core, the mantle, the crust and our ability then to compare that with the Earth," said NASA Chief Scientist Jim Green.

"This is of fundamental importance to understand the origin of our solar system and how it became the way it is today."


For the team, touching down on the surface of Mars will represent years of hard work and preparation ending in a single event.

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