NASA launches InSight spacecraft to Mars to study Red Planet’s quakes


AFP

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NASA launches InSight spacecraft to Mars to study Red Planet’s quakes

The $993 million project aims to expand human knowledge of interior conditions on Mars, inform efforts to send human explorers there, and reveal how rocky planets like the Earth formed billions of years ago.

NASA on May 5 blasted off its latest Mars lander, InSight, designed to perch on the surface and listen for “Marsquakes” ahead of eventual human missions to explore the Red Planet.

“Three, two, one, liftoff!” said a NASA commentator as the spacecraft launched on a dark, foggy morning atop an Atlas V rocket at 4.05 a.m. Pacific time (4.35 p.m. IST) from Vandenberg Air Force Base in California, marking NASA’s first interplanetary launch from the U.S. west coast.

The $993 million project aims to expand human knowledge of interior conditions on Mars, inform efforts to send human explorers there, and reveal how rocky planets like the Earth formed billions of years ago. If all goes as planned, the lander should settle on the Red Planet on November 26. Its name, InSight, is short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport.

NASA chief scientist Jim Green said experts already know that Mars has quakes, avalanches and meteor strikes. “But how quake-prone is Mars? That is fundamental information that we need to know as humans that explore Mars,” Mr. Green said.

French-made seismometer

The key instrument on board is a seismometer, called the Seismic Experiment for Interior Structure, made by the French Space Agency. After the lander settles on the Martian surface, a robotic arm is supposed to emerge and place the seismometer directly on the ground.

The second main instrument is a self-hammering probe that will monitor the flow of heat in the planet’s subsurface. Called the Heat Flow and Physical Properties Package, it was made by the German Space Agency with the participation of the Polish Space Agency.

The probe will bore down 10 to 16 feet (3 to 5 metres), NASA said, 15 times deeper than any previous Mars mission. Understanding the temperature on Mars is crucial to NASA’s efforts to send people there by the 2030s, and how much a human habitat might need to be heated under frigid conditions, said Mr. Green.

Daytime summer temperatures near the Martian equator may reach 70°F (20°C), but then plunge by night to -100°F (-73°C). “It is an important part of knowledge of how this planet is evolving,” Mr. Green said. “We have to be able as humans living and working on Mars to survive that.”

Two-year mission

The solar and battery-powered lander is designed to operate for 26 Earth months, or one year on Mars, a period in which it is expected to pick up as many as 100 quakes.

“Hopefully it will last a lot longer than that,” said Tom Hoffman, InSight project manager from NASA’s Jet Propulsion Laboratory. The spacecraft was initially supposed to launch in 2016 but had to be delayed after temperature tests showed a problem with part of the seismometer, which engineers have since fixed.

InSight aims to be the first NASA spacecraft to land on Mars since the Curiosity rover in 2012. “There is nothing routine about going to Mars, especially landing on Mars,” said Stu Spath, InSight programme manager at Lockheed Martin Space.

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