Scientists are learning more about the interior structure of Mars and have found the depths of three boundaries beneath the planet’s surface. “Ultimately it may help us understand planetary formation,” Alan Levander, co-author of the study said in a statement. This is the first time that these boundaries have been measured directly. Investigating the planet’s interior is complicated because it doesn’t have tectonic plates like Earth does. “In the absence of plate tectonics on Mars, its early history is mostly preserved compared with Earth,” co-author Sizhuang Deng said in the statement. “The depth estimates of Martian seismic boundaries can provide indications to better understand its past as well as the formation and evolution of terrestrial planets in general.” The data was collected using NASA’s InSight lander, which uses an instrument called a seismometer to measure vibrations coming from within Mars. It detects marsquakes, in which seismic waves pass through the planet, which can be used to infer details about the density and the composition of the planet beneath the surface. “The traditional way to investigate structures beneath Earth is to analyze earthquake signals using dense networks of seismic stations,” Deng said in the statement. “Mars is much less tectonically active,… Read full this story
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