Introduction
By using sophisticated geophysical instruments, InSight would delve deep beneath the surface of Mars, detecting the fingerprints of the processes of terrestrial planet formation, as well as measuring the planet's "vital signs": Its "pulse" (seismology), "temperature" (heat flow probe), and "reflexes" (precision tracking).
InSight seeks to answer one of science's most fundamental questions: How did the terrestrial planets form?
Why Mars?
Previous missions to Mars have investigated the surface history of
the Red Planet by examining features like canyons, volcanoes, rocks and
soil, but no one has attempted to investigate the planet's earliest
evolution - its building blocks - which can only be found by looking far
below the surface.
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